Page:Passages from the Life of a Philosopher.djvu/510

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LIST OF MR. BABBAGE'S PRINTED PAPERS.

23. Observations on the Measurement of Heights by the Barometer.—Brewster's Edin. Jour. of Science, 1824. P. 85.

24. On a New Zenith Micrometer.—Mem. Astro. Soc. March, 1825.

25. Account of the repetition of M. Arago's Experiments on the Magnetism manifested by various substances during Rotation. By C. Babbage, Esq. and Sir John Herschel.—Phil. Trans. 1825. P. 467.

26. On the Diving Bell.—Ency. Metrop. 4to. 1826.

27. On Electric and Magnetic Rotation.—Phil. Trans. 1826. Vol. ii. p. 494

28. On a method of expressing by Signs the Action of Machinery.—Phil. Trans. 1826. Vol. ii. p. 250.

29. On the Influence of Signs in Mathematical Reasoning.—Trans. Cam. Phil. Soc. 1826. Vol. ii. p. 218.

30. A Comparative View of the different Institutions for the Assurance of Life. 1 vol. 8vo. 1826. German Translation. Weimar, 1827.

31. On Notation.—Edinburgh Encyclopedia. 4to.

32. On Porisms.—Edinburgh Encyclopedia. 4to.

33. A Table of the Logarithms of the Natural Numbers, from 1 to 108,000. Stereotyped. 1 vol. 8vo. 1826.

34. Three editions on coloured paper, with the Preface and Instructions translated into German and Hungarian, by Mr. Chas. Nagy, have been published at Pesth and Vienna. 1834.

35. Notice respecting some Errors common to many Tables of Logarithms.—Mem. Astron. Soc. 4to. 1827. Vol. iii. p. 65.

Evidence on Savings-Banks, before a Committee of the House of Commons, 1827.

36. Essay on the general Principles which regulate the Application of Machinery.—Ency. Metrop. 4to. 1829.

37. Letter to T. P. Courtenay on the Proportion of Births of the two Sexes amongst Legitimate and Illegitimate Children.—Brewster's Edin. Jour. of Science, Vol. ii. p. 85. 1829. This letter was translated into French and published by M. Villermé, Member of the Institute of France.

38. Account of the great Congress of Philosophers at Berlin, on 18 Sept. 1828.—Communicated by a Correspondent [C. B.]. Edin. Journ. of Science by David Brewster, Vol. x. p. 225. 1829.

39. Note on the Description of Mammalia.—Edin. Jour. of Science, 1829. Vol. i. p. 187. Ferussac Bull, vol. xxv. p. 296.

40. Reflections on the Decline of Science in England, and on some of its Causes. 4to. and 8vo. 1830.

41. Sketch of the Philosophical Characters of Dr. Wollaston and Sir H. Davy. Extracted from the Decline of Science, 1830.

42. On the Proportion of Letters occurring in Various Languages, in a letter to M. Quételet.—Correspondence Mathematique et Physique. Tom. vi. p. 136.

43. Specimen of Logarithmic Tables, printed with different coloured inks and on variously-coloured papers, in twenty-one volumes 8vo. London. 1831.

The object of this Work, of which one single copy only was printed, is to ascertain by experiment the tints of the paper and colours of the inks least fatiguing to the eye.

One hundred and fifty-one variously-coloured papers were chosen, and the same two pages of my stereotype Table of Logarithms were printed upon them in inks of the following colours: light blue, dark blue, light green, dark green, olive, yellow, light red, dark red, purple, and black.

Each of these twenty volumes contains papers of the same colour, numbered in the same order, and there are two volumes printed with each kind of ink.