and, lastly, by the supporting sound-bar and sound-post and back." The secret of the ancient varnish, on which some of the qualities of the instrument probably de- pended, is still only partly revealed. Mr. Haweis believes, with Charles Reade, that it was an heterogeneous varnish, first of oil with gum in solution, then of color evapo- rated in spirit. Dod, as late as 1830, had the recipe for something very like the Cre- mona varnish; and, lately, Mr. Perkins has analyzed the varnish of Joseph Guarnerius and found amber in it, and has himself pro- duced varnish of an extraordinary quality. The supreme interest of the violin lies in its simplicity, beauty, strength, subtilty, and indestructibility, and, above all, in its perfection as a musical instrument. It combines accent with modification of sus- tained tone. The organ has sustained tone without accent, the piano accent without sustained tone, the violin accent and sus- tained tone modified at will. Within its limits it is scientifically perfect; it has all the sensibility, and more than the compass, execution, and variety, of the human voice. It is not an invention, it is a growth; it has come together, it is the " survival of the fit- test." Its rough elements were selected from a variety of instruments which preceded it. Before the end of the fourteenth century viols were made in great profusion of every style and shape, but the rise of the true violin tribe begins with the rise of modern music. When the true octave and the per- fect eadena had been discovered, and the human voice was found to fall naturally into soprano, contralto, tenor, and bass, viol instruments, adapted to these four di- visions, were gradually separated from the confusion of instruments and brought to a perfection of adaptability.
A New Anaesthetic. Bromide of ethyl is recommended by Dr. R. J. Levis, of the Pennsylvania and Jefferson College Hospi- tals, Philadelphia, as an anaesthetic prefer- able, in most respects, to ether and chloro- form. It acts rapidly, and the patient recov- ers quickly from its effects. As far as ob- served by Dr. Levis, after several months of experience in using it, it does not influ- ence the circulation except sometimes to produce a slight increase in the rapidity of
the heart's action, and in arterial pressure. Respiration is but little affected by it be- yond its producing the ordinary character- istics of all anaesthetic sleep; in this re- spect, its action seems more to resemble that of ether than that of chloroform. Nausea and vomiting occur less frequently with it than with ether or chloroform. It vaporizes readily, and seems to be entirely eliminated through the lungs, having, in this respect, a decided advantage over chloroform, which is not entirely removed from the system. Its vapor produces no irritation in the respiratory passages. Gen- eral excitement and the tendency to strug- gle occur far less frequently when it is used than in the early stages of the anaes- thesia of ether, and, apparently, even than in that of chloroform. Complete anaesthe- sia is accomplished, it is estimated, in about one third less time than is the case with chloroform, and recovery from the effect is even comparatively more rapid, the time re- quired for recovery generally not exceeding two minutes after the inhalation has ceased. The recovery is so complete that the patient is often able to stand and to walk imme- diately after awakening. Insensibility is usually produced in from two to three min- utes. The longest period that has been re- quired in Dr. Levis's practice was four min- utes, the shortest one minute. The com- pletion of the effect is clearly shown by the dilatation of the pupils of the eyes, which resume their normal condition when the sentient sta^e returns. The vapor of this substance is not inflammable, so that it is free from the danger which attends the use of ether at night when lights are around. The ordinary essentials of the proper and safe production of anaesthesia must not, however, be dispensed with in the use of the new agent, for its safety is only com- parative, and is not yet proved to be abso- lute. Dr. Levis, who acknowledges his in- debtedness to Dr. Lawrence Turnbull, of Philadelphia, for the suggestion of this agent, now uses the bromide of ethyl, to the exclusion of other anaesthetics.
Slave-making Ants. It may be edifying to such persons as take pride in physical prowess to know that on the battle-field ants distinguish themselves quite as signally as