Popular Science Monthly/Volume 31/July 1887/New Chapters in the Warfare of Science: Physical Sciences II
|←Earthquakes||Popular Science Monthly Volume 31 July 1887 (1887)
New Chapters in the Warfare of Science: Physical Sciences II
By Andrew Dickson White
|Mental Differences of Men and Women→|
By ANDREW DICKSON WHITE,
LATE PRESIDENT OF CORNELL UNIVERSITY.
THE popular beliefs of classic antiquity regarding storms, thunder, and lightning, took shape in myths representing Vulcan as forging thunderbolts, Jupiter as flinging them at his enemies, Æolus intrusting the winds in a bag to Æneas, and the like. An attempt at their further theological development is seen in the Pythagorean statement that lightnings are intended to terrify the damned in Tartarus.
But, at a very early period, we see the beginning of a scientific view. In Greece, the Ionic philosophers held that such phenomena are obedient to law; Plato, Aristotle, and many lesser lights, attempted to account for them on natural grounds; and their explanations, though crude, were based upon observation and thought. In Rome, Lucretius, Seneca, Pliny, and others, inadequate as their statements were, implanted at least the germs of a science. But, as the Christian Church rose to power, this evolution was checked; the new leaders of thought found, in the Scriptures recognized by them as sacred, the basis for a new view, or rather for a modification of the old view.
This ending of a scientific evolution based upon observation and reason, and this beginning of a sacred science based upon the letter of Scripture and on theology, are seen in the utterances of various Fathers in the early Church. As to the general features of this new development, Tertullian held that sundry passages of Scripture prove lightning identical with hell-fire; and this idea was transmitted from generation to generation of later churchmen, who found an especial support of Tertullian's view in the sulphurous smell experienced during thunderstorms. Saint Hilarion thought the firmament very much lower than the heavens, and that it was created for the support of the upper waters, as well as for the tempering of our atmosphere. Saint Ambrose held the firmament to be a solid vault, and the thunder to be caused by the winds breaking through it; citing from the prophet Amos the sublime passage regarding "Him that establisheth the thunders." He shows, indeed, some conception of the true source of rain; but his whole reasoning is limited by various scriptural texts. He lays great stress upon the firmament as a solid outer shell of the universe: the heavens he holds to be not far outside this outer shell, and argues regarding their 374 THE POPULAR SCIENCE MONTHLY.
character from Saint Paul's Epistle to the Corinthians and from the one hundred and forty-eighth Psalm. As to " the waters which are above the firmament," he takes up the objection of those who hold that, this outside of the universe being spherical, the waters must slide off it, especially if the firmament revolves ; and he points out that it is by no means certain that the outside of the firmament is spherical, and insists that, if it does revolve, the water is just what is needed to lubri- cate and cool its axis.*
Saint Jerome held that God at the creation spread out the firma- ment between heaven and earth, separating the upper waters from the lower, and that, in order to keep all in place, He caused the upper waters to be frozen into ice. A proof of this view Jerome found in the w r ords of Ezekiel regarding " the crystal stretched above the cherubim." f
The germinal principle in accordance with which all these theories were evolved, was most clearly proclaimed to the world by Saint Au- gustine in his famous utterance, " Nothing is to be accepted save on the authority of Scripture, since greater is that authority than all the powers of the human mind." \ No treatise was safe thereafter which did not breathe the spirit and conform to the letter of this maxim. Unfortunately, what was generally meant by the " authority of Script- ure," was the tyranny of a literature imperfectly transcribed, viewed through distorting superstitions, and frequently interpreted by party spirit.
Following this precept, Saint Augustine developed, in every field, theological views of science which have never led to a single truth which, without exception, have forced mankind away from the truth, and have caused Christendom to stumble for centuries into abysses of error and sorrow. In meteorology, as in every other science with which he dealt, he based everything upon the letter of the sacred text ; and it is characteristic of the result that this man, so great when un- trammeled, thought it his duty to guard especially the whole theory of the " waters above the heavens."
In the sixth century this theological reasoning was still further developed by Cosmas Indicopleustes. Basing his theory of the uni- verse upon the ninth chapter of Hebrews, he insisted that the earth is flat, a parallelogram, and that from its outer edges rise immense walls
- See Ambrose, " Ilexfcmcron," ii, 3, 4 ; ill, 5 (Migne, "Patr. Lat.," xiv, 148-150, 153,
165). The passage as to lubrication of the heavenly axis is as follows: " Deinde cum ipsi dicant volvi orbem cceli stellis ardentibus rcfulgentem, nonne divina providentia necessario prospexit, ut intra orbcm cceli, et supra orbem rcdundarct aqua, qute ilia fcr- ventis axis incendia temperaret ? "
f See Jerome, "Epistola," lxix, 6 (Migne, "Patr. Lat.," xxii, 669).
\ " Major est quippe Scriptura: hujus auctoritas, quam omnis humani ingenii capa. citas." Augustine, " De Genesi ad Lit.," ii, 5 (Migne, "Patr. Lat.," xxxiv, 266, 267). Or, as he is cited by Vincent of Beauvais (" Spec. Nat.," iv, 98) : " Xon est aliquid temere diffiniendum, sed quantum Scriptura dicit accipiendum, cujus major est auctoritas quam omnis humani ingenii capacitas."
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supporting the firmament ; then, throwing together the reference to the firmament in Genesis and the outburst of poetry in the Psalms regarding the " waters that be above the heavens," he insisted that over the terrestrial universe are solid arches bearing a vault, closing it in and supporting a vast cistern " containing the waters " ; finally, tak- ing from Genesis the expression regarding the " windows of heaven," he insisted that these windows are opened and closed by the angels whenever the Almighty wishes to send rain upon the earth or to with- hold it.*
This was accepted by the universal Church as a vast contribution to thought ; for over a thousand years it was the orthodox doctrine, and various leaders in theology devoted themselves to developing and supplementing it. ,
About the beginning of the seventh century, Isidore, Bishop of Seville, was the ablest prelate in Christendom, and was showing those great qualities which led to his enrollment among the saints of the Church. His theological view of science marks an epoch. As to the " waters above the firmament," Isidore contends that they must be lower than the uppermost heaven, though higher than the lower heaven, because in the one hundred and forty-eighth Psalm they are mentioned after the heavenly bodies and the " heaven of heavens," but before the terrestrial elements. As to their purpose, he hesitates between those who held that they were stored up there by the prescience of God for the destruction of the world at the flood, as the words of Scripture that "the windows of heaven were opened" seemed to indicate, and those who held that they were kept there to moderate the heat of the heavenly bodies. As to the firmament, he is in doubt whether it en- velops the earth " like an egg-shell," or is merely spread over it " like a curtain" ; for he holds that the passage in the one hundred and fourth Psalm may be used to support either view.
Having laid these scriptural foundations, Isidore shows consider- able power of thought ; indeed, at times, when he discusses the rain- bow, rain, hail, snow, and frost, his theories are rational, and give evi- dence that, if he could have broken away from his adhesion to the letter of Scripture, he might have given a vast impulse to the evolu- tion of a true science.f
About a century later appeared, at the other extremity of Europe, the second in the trio of theological men of science in the early middle ages, Bede the Venerable. The nucleus of his theory also is to be found in the accepted view of the " firmament " and of the " waters above the heavens," derived from Genesis ; the firmament he holds to be spherical, and of a nature subtile and fiery ; the upper heavens, he says, which contain the angels, God has tempered with ice, lest they
- Sec Cosraas, " Topographia Christiana " (in Montfaucon, " Collectio nova patrum," ii).
f See Isidore, " Etymologise," xiii, 7-9, " De ordine creaturarum," 3, 4, and " De na- tura rerum," 29, 30 (Mignc, "Patr. Lat.," lxxxii, 476, 47V, Ixxxiii, 920-922, 1001-1003).
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inflame the lower elements ; as to the waters placed above the firma- ment, lower than the spiritual heavens, but higher than all corporeal creatures, he says, " Some declare that they were stored there for the deluge, but others, more correctly, that they are intended to temper the fire of the stars." He goes on with long discussions as to various elements and forces in Nature, and dwells at length upon the air, of which he says that the upper, serene air is over the heavens ; that the other, w r hich is coarse with humid exhalations, is sent off from the earth, and that in this are lightning, hail, snow, ice, and tempests, finding proof of this in the one hundred and forty-eighth Psalm, where these are commanded to "praise the Lord from the earth." *
So great was Bede's authority that nearly all the anonymous specu- lations of the next following centuries upon these subjects w r ere event- ually ascribed to him. In one of these spurious treatises an attempt is made to get new light upon the sources of the waters above the heavens, the main reliance beinsr the sheet containing the animals let down from heaven, in the vision of Saint Peter. Another of these treatises is still more curious, for it endeavors to account for earth- quakes and tides by means of the Leviathan mentioned in Scripture. This characteristic passage runs as follows : " Some say that the earth contains the animal Leviathan, and that he holds his tail after a fash- ion of his own, so that it is sometimes scorched by the sun, whereupon he strives to get hold of the sun, and so the earth is shaken by the motion of his indignation ; he drinks in also, at times, such huge masses of the waves that when he belches them forth all the seas feel their effect." f And this theological theory of the tides, as caused by the alternate suction and belching of Leviathan went far and wide.
In the writings thus covered with the name of Bede, there is much showing a scientific spirit, which might have come to something of permanent value had it not been hampered by the supposed necessity of conforming to the letter of Scripture. It is as startling as it is refreshing to hear one of these mediaeval theorists burst out against those who are content to explain everything by the power of God, as follows : " What is more pitiable than to say that a thing is, because God is able to do it, and not to show any reason why it is so, nor any purpose for which it is so ; just as if God did everything that he is able to do ! You talk like one who says that God is able to make a calf out of a log. But did he ever do it? Either, then, show a rea- son why a thing is so, or a purpose wherefore it is so, or else cease to declare it so." \
- See Bede, " Dc natura rerum " (Migne, " Patr. Lat.," xc).
\ See the treatise " De mundi constitutione," in Bede's " Opera " (Migne, " Patr. Lat.," xc, 8S4).
\ Sec "Elementa philosophioe," in Bede's "Opera" (Migne, "Patr. Lat.," xc, 1139). This treatise, which has also been printed, under the tide of " De philosophia mundi," among the works of Ilonorius of Anton, is believed by modern scholars (Haureau, Wer- ner, Poole) to be the production of William of Conches.
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The most permanent contribution of Bede to scientific thought in this field was his revival of the view that the firmament is made of ice ; and he supported this from the w T ords in the twenty-sixth chapter of Job, " He bindeth up the waters in his thick cloud, and the cloud is not rent under them."
About the beginning of the ninth century appeared the third in that triumvirate of churchmen who were the oracles of sacred science throughout the early middle ages Rabanus Maurus, Abbot of Fulda and Archbishop of Mayence. Starting, like all his predecessors, from the first chapter of Genesis, borrowing here and there from the ancient philosophers, and excluding everything that could conflict with the letter of Scripture, he follows, in his work upon the universe, his two predecessors, Isidore and Bede, developing especially Bede's theory that the firmament is strong enough to hold up the " waters above the heavens," because it was made of ice. *
For centuries the authority of these three great teachers was un- questioned, and in countless manuals and catechisms their doctrine was translated and diluted for the common mind, f But, about the second quarter of the twelfth century, a priest, Honorius of Autun, pro- duced several treatises which show that thought on this subject had made some little progress. He explained the rain rationally, and mainly in the modern manner ; with the thunder he is less successful, but in- sists that the thunderbolt " is not stone, as some assert." His thinking is vigorous and independent. J Had theorists such as he been many, a new science could have been rapidly evolved, but the theological current was too strong.
The strength of this current which overwhelmed the thought of Honorius is seen again in the work of the Dominican monk, John of San Geminiano, who in the thirteenth century gave forth his " Summa de Exemplis " for the use of preachers in his order. Of its thousand pages, over two hundred are devoted to illustrations drawn from the heavens and the elements. A characteristic specimen is his explana- tion of the Psalmist's phrase, "The arrows of the thunder." These, he tells us, are forged out of a dry vapor rising from the earth and kindled by the heat of the upper air, which then, coming into contact with a cloud just turning into rain, " is conglutinated like flour into dough," but, being too hot to be extinguished, its particles become
- See Rabanus Maurus, " Comment, in Genesim " and " De Universe- " (Migne, " Patr.
Lat.," cvii, cxi).
f For a charmingly naive example of these primers, see the little Anglo-Saxon manual of astronomy, sometimes attributed to ^Elfric. It is in the vernacular, but is translated in Wright's " Popular Treatises on Science during the Middle Ages." Eede is, of course, its chief source.
% See Honorius Augustodunensis, " De imagine mundi," and " Hexsemeron " (Migne, " Patr. Lat.," clxxii). The " De philosophia mundi," the most rational of all, is, however, believed by modern scholars to be unjustly ascribed to him. See note above.
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merely sharpened at the lower end, and so blazing arrows, cleaving and burning everything they touch." *
But far more important in the thirteenth century was the fact that the most eminent scientific authority of that age, Albert the Great, Bishop of Ratisbon, attempted to reconcile the speculations of Aris- totle with the theological views derived from the fathers. In one very important respect he improved upon the meteorological views of his great master. The thunderbolt, he says, is no mere fire, but the prod- uct of black clouds containing much mud, which, when it is baked by the intense heat, forms a fiery black or red stone that falls from the sky, tearing beams and crushing walls in its course : such he has seen with his own eyes.f
The monkish encyclopedists of the later middle ages added little to these theories. As we glance over the pages of Vincent of Beau- vais, Bartholomew of Glanville, and William of Conches, we note only a growing deference to the authority of Aristotle as supplementing that of Isidore and Bede and explaining sacred Scripture. Aristotle is treated like a church Father, but extreme care is taken not to go beyond the great maxim of Saint Augustine; then, little by little, Bede and Isidore fall into the background, Aristotle fills the whole horizon, and his utterances are second in sacredness only to the text of Holy Writ.
A curious illustration of the difficulties these mediaeval scholars had to meet in reconciling the scientific theories of Aristotle with the letter of the Bible is seen in the case of the rainbow. It is to the honor of Aristotle that his conclusions regarding the rainbow, though slightly erroneous, were based upon careful observation and evolved by reasoning alone ; but his Christian commentators, while anxious to follow him, were brought up against the scriptural statement that God had created the rainbow as a sign to Noah that there should never asrain be a Flood on the earth. Even so bold a thinker as Cardinal Pierre d'Ailly, whose speculations as to the geography of the earth did so much afterward in stimulating Columbus, faltered before this statement, acknowledging that God alone could explain it ; but sug- gested that possibly never before the deluge had a cloud been suffered to take such a position toward the sun as to cause a rainbow. J
The learned cardinal was also constrained to believe that certain stars and constellations have something to do in causing the rain, since these would best explain Noah's foreknowledge of the Deluge. In connection with this scriptural doctrine of winds came a scriptural
- Sec Joannes a S. Gcminiano, " Summa," c. To.
f See Albertus Magnus, " II Sent.," Opp. xv, 137, a. (cited by ITellcr, "Gc?ch. d. Phy- 8ik," i, 184) and his " Liber Methauroruni," III, iv, 18 (of which I have used the edition of Venice, 1488).
% See his "Concordia astronomies veritatis cum theologia" (Paris, 1483 in his " Imago mundi" and Venice, 1490); also Eck's commentary on Aristotle's " Mcteoro- logica" (Augsburg, 1519).
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doctrine of earthquakes : they were believed to be caused by winds issuing from the earth, and this view was based upon the passage in the one hundred and thirty-fifth Psalm, " He bringeth the wind out of his treasuries."*
Such were the main typical attempts during nearly fourteen cent- uries to build up under theological guidance and within scriptural limi- tations a sacred science of meteorology. But these theories were mainly evolved in the effort to establish a basis and general theory of phenomena : it still remained to account for special manifestations, and here came a development of theological thought far more im- portant.
This development was twofold : on the one hand, these phenomena were attributed to the Almighty ; and, on the other, to Satan. As to the first of these theories, we constantly find the divine wrath men- tioned by the earlier fathers as the cause of lightning, hail-storms, hurricanes, and the like.
At the very beginning of Christianity we see a curious struggle between pagan and Christian belief upon this point. Near the close of the second century the Emperor Marcus Aurelius, in his effort to save the empire, fought a hotly-contested battle with the Quadi, in what is now Hungary. While the issue of this great battle was yet doubtful, there came suddenly a blinding storm beating into the faces of the Quadi. This gave the Roman troops the advantage, and ena- bled Marcus Aurelius to win a decisive victory. Votaries of each of the great religions claimed that this storm was caused by the object of their own adoration. The pagans insisted that Jupiter had sent the storm in obedience to their prayers, and on the Antonine Column at Rome we may still see the figure of Olympian Jove casting his thunderbolts and pouring a storm of rain from the open heavens against the Quadi. On the other hand, the Christians insisted that the storm had been sent by Jehovah in obedience to their prayers ; and Tertullian, Eusebius, Saint Gregory of Nyssa, and Saint Jerome were among those who insisted upon this meteorological miracle the first two, indeed, in the fervor of their arguments for its reality, allowing themselves to be carried considerably beyond exact histori- cal truth, f
As time went on, the Fathers developed this view more and more from various texts in the Jewish and Christian sacred books, substi- tuting for Jupiter flinging his thunderbolts the Almighty wrapped in thunder and sending forth his lightnings. Through the middle ages this was fostered until it became a mere truism, entering into all me-
- See Rcisch, " Margarita philosophica," ix, IS, and Eck, " Arist. Meteor." (as above),
ii, nota 2.
f For the authorities, pagan and Christian, see the note of Merivale, in his "Ilistory of the Romans under the Empire," chap, lxviii. He refers, for still fuller citations, to Fynes Clinton's " Fast. Rom.," p. 24.
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diseval thinking, and was still further developed by an attempt to specify the particular sins which were thus punished. In the twelfth century the Florentine historian, Yillani, ascribed floods and fires to the "too great pride of the city of Florence and the ingratitude of the citizens toward God," which, "of course," says a recent historian, "meant their insufficient attention to the ceremonies of religion."*
In the thirteenth century the Cistercian monk, Caesar of Heister- bach, popularized the doctrine in Central Europe. His rich collection of anecdotes for the illustration of religious truths was the favorite recreative reading in the convents for three centuries, and exercised great influence over the thought of the later middle ages ; and in this work he relates several instances of the divine use of lightning, both for rescue and for punishment. Thus he tells us how the stew- ard (ccllerarius) of his own monastery was saved from the clutch of a robber by a clap of thunder which, in answer to his prayer, burst sud- denly from the sky and frightened the bandit from his purpose ; how, in a Saxon theatre, twenty men were struck down, while a priest escaped, not because he was not a greater sinner than the rest, but because the thunderbolt had respect for his profession ! It is Ccesa- rius, too, who tells us the story of the priest of Treves, struck by light- ning in his own church, whither he had gone to ring the bell against the storm, and whose sins were revealed by the course of the light- ning ; for it tore his clothes from him and consumed certain parts of his body, showing that the sins for which he was punished were vanity and unchastity.f
This mode of explaining the divine interference more minutely is developed century after century, and we find both Catholics and Prot- estants assigning as causes of unpleasant meteorological phenomena whatever appears to them wicked, or even unorthodox. Among the English reformers, Tyndale quotes in this kind of argument the thir- teenth chapter of I. Samuel, showing that, when God gave Israel a king, it thundered and rained. \ Archbishop Whitgift, Bishop Bale, and Bishop Pilkington insisted on the same view.* In Protestant Germany, about the same period, Plieninger took a dislike to the new Gregorian calendar, and published a volume of " Brief Reflections," in which he insisted that the elements had given utterance to God's anger against it, calling attention to the fact that violent storms raged over almost all Germany during the very ten days which the Pope had taken out for the correction of the year, and that great floods began with the first days of the corrected ycar.||
- See Trollope, " History of Florence," i, 64.
f See Caesarius Heisterbacensis, " Dialogus miraculorum," x, c. 28-30. % See Tyndale, Doctrinal Treatises," 194 (in Parker Society publications).
- See Whitgift, " Works," 477-483 ; Bale, " Works," 244, 245 ; and Pilkington,
"Works," 177, 536 (both in Parker Society publications). Bishop Bale cites especially Job xxxviii, Ecclesiasticus xiii, and Revelation viii, as supporting the theory.
J See Janssen, " Gcschichtc des deutschen Tolkcs," v, 350, for Plieninger's words.
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Early in the seventeenth century, Majoli, Bishop of Voltoraria, in southern Italy, produced his huge work, "Dies Canicularii," or "Dog- Days," which remained a favorite encyclopaedia in Catholic lands for over a hundred years. Treating of thunder and lightning, he com- pares them to bombs against the wicked, and says that the thunder- bolt is " an exhalation condensed and cooked into stone," and that " it is not to be doubted that, of all instruments of God's vengeance, the thunderbolt is the chief " ; that by means of it Sennacherib and his army were consumed ; that Luther was struck by lightning in his youth as a caution against departing from the Catholic faith ; that blasphemy and Sabbath-breaking are the sins to which this punishment is especially assigned, and he cites the case of Dathan and Abiram.* Fifty years later the Jesuit Stengel developed this line of thought still further in four thick quarto volumes on the judgments of God, adding an elaborate schedule for the use of preachers in the sermons of an entire year. Three chapters were devoted to thunder, lightning, and storms. That the author teaches the agency in these of diabolical powers goes without saying ; but this can only act, he declares, by divine permission, and the thunderbolt is always the finger of God, which rarely strikes a man save for his sins, and the nature of the spe- cial sin thus punished may be inferred from the bodily organs smitten. f A few years later, in Protestant Swabia, Pastor George Nuber issued a whole volume of " weather-sermons," in which he discusses nearly every sort of elemental disturbances storms, floods, droughts, light- ning, and hail. These, he says, come direct from God for human sins, yet no doubt with discrimination, for there are five sins which God especially punishes with lightning and hail, namely, impenitence, in- credulity, neglect of the repair of churches, fraudulence in the pay- ment of tithes to the clergy, and oppression of subordinates, each of which points he supports with a mass of scriptural texts. J
This doctrine having become especially precious both to Catholics and to Protestants, there were issued hand-books of prayers against bad weather : among these was the " Spiritual Thunder and Storm Booklet," produced in 1731 by a Protestant scholar, Stoltzlin, whose three or four hundred pages of prayer and song, " sighs for use when it lightens fearfully," and " cries of anguish when the hail-storm is draw- ing on," show a wonderful adaptability to all possible meteorological emergencies. The preface of this volume is contributed by Professor Dilherr, pastor of the great church of St. Sebald at Nuremberg, who, in discussing the divine purposes of storms, adds to the three usually assigned namely, God's wish to manifest his power, to display his anger, and to drive sinners to repentance a fourth, which, he says, is
- See Majoli, " Dies Can.," I, i.
f See Stengelius, " De judiciis divinis," ii, 15-61, and especially the example of the "impurus et saltator sacerdos, fulmine castratus" (pp. 26, 27). % See Nuber, " Conciones meteoricae" (TTlm, 1661).
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that God may show us " with what sort of a storm-bell he will one day ring in the last judgment." *
About the end of the first quarter of the eighteenth century, we find, in Switzerland, even the eminent and rational Professor of Mathe- matics, Scheuchzer, publishing a "Physica Sacra," with the Bible as a basis, and forced to admit that the elements, in the most literal sense, utter the voice of God. The same pressure was felt in New England. Typical are the sermons of Increase Mather on " The Voice of God in Stormy Winds." He especially lays stress on the voice of God speak- ing to Job out of the whirlwind, and upon the text, " Wind and storm fulfilling his word." He declares, " When there are great tempests, the angels oftentimes have a hand therein, . . . yea, and sometimes evil angels." He gives several cases of blasphemers struck by light- ning, and says, " Nothing can be more dangerous for mortals than to condemn dreadful providences, and, in particular, dreadful tempests." f
His distinguished son, Cotton Mather, disentangled himself some- what from the old view, as he had done in the interpretation of comets. J In his " Christian Philosopher," his " Thoughts for the Day of Rain," and his " Sermon preached at the Time of the Late Storm " (in 1723), he is evidently tending toward the modern view. Yet, from time to time, the older view has reasserted itself ; and in France, as recently as the year 1870, we find the Bishop of Verdun ascribing the drought afflicting his diocese to the sin of Sabbath-breaking.
This theory, which attributed injurious meteorological phenomena mainly to the purposes of God, was a natural development, and com- paratively harmless ; but at a very early period there was evolved another theory, which, having been ripened into a doctrine, cost the earth dear indeed. Never, perhaps, in the modern world has there been a dogma more prolific of physical, mental, and moral agony throughout whole nations and during whole centuries.* This theory, its development by theology, its fearful results to mankind, and its destruction by scientific observation and thought, will form the subject of my next chapter.
- Sec Stoltzlin, "Gcistliches Donner- und Wettcr-Biichlein" (Zurich, 1781).
f See Increase Mather, "The Voice of God," etc. (Boston, 1704). This rare volume is in the rich collection of the American Antiquarian Society at Worcester.
% See a chapter on this subject, by the present writer, in " The Popular Science Monthly " for October, 1885. A new edition, with large additions, has been recently pub- lished by the American Historical Association.
- See the "Semainc relig. de Lorraine," 1870, p. 445 (cited by " Paul Parfait," in his
" Dossier des Pelerinages," 141-143).
��M. Wroblewski has made a successful application of the electric light to tha magic-lantern projection of opaque objects. In the midst of darkness a strong light is concentrated on the object, which becomes intensely illuminated, and its picture may be thrown upon the canvas with the colors fully brought out and even made more brilliant.
- See "The Popular Science Monthly" for October, 1885.
- See Tertullian, "Apol. contra gentes," c. 47.
- See, for example, Augustin de Angelis, "Lectura Meteorologia," 64.
- See Hilarion, "In Psalm," cxxxv (Migne, "Patr. Lat.," ix, 773).
- "Firmans tonitrua" (Amos iv, 13); the phrase does not appear in our version.