INDEX. 



725 



Crystals of peroxide of benzoyl, on the 



form of, 394. 



Cubitt (Sir W.), obituary notice of, iv. 

 Cyclones, development of the theory of, 



385. 



Dale (T. P.), researches on the refrac- 

 tion, dispersion and sensitiveness of 

 liquids, 448. 



Debus (H.) on some compounds and 

 derivatives of glyoxylic acid, 429. 



De la Rue (W.) on the total solar eclipse 

 of July 18, I860, observed at Riva- 

 bellosa, near Miranda de Ebro, in 

 Spain, 58. 



Despretz (C. M.) elected foreign mem- 

 ber, 133. 



Diamines, on isomeric, 639. 



Differential coefficients and determi- 

 nants of lines, application of, to ana- 

 lytical mechanics, 176. 



equations, on the integration of 



simultaneous, 13. 



, simultaneous, in which the 



number of variables exceeds by more 

 than unity the number of the equa- 

 tions, 184. 



Diffusion of vapours, a means of distin- 

 guishing between apparent and real 

 vapour-densities of chemical com- 

 pounds, 507. 



Drift deposits, extinct mammalia and 

 flint implements in, 38. 



Dynamics, differential equations of, 

 420. 



Earth, on the rigidity of the, 103. 



Earthquake-wave experiments at Holy- 

 head, 84. 



Eclipse, total solar, of July 18, 1860, 58. 



Elastic fluids, on the true theory of pres- 

 sure as applied to, 242. 



spheroidal shells, dynamical pro- 

 blems regarding, 274. 



Electric cables, unit of speed for com- 

 paring, 211. 



conducting-power of alloys, influ- 

 ence of temperature on, 652. 



conducting-power of thallium and 



iron, on the influence of temperature 



on, 472. 



light, on the long spectrum of, 166. 



, spectra of, as modified by 



the nature of the electrodes and the 



media of discharge, 202. 



signals, laws of transmission of, 



through various lengths of one cable, 

 198. 



wave, on the relative speed of the, 



through submarine cables, 211. 



Electrical discharges, stratified appear- 

 ances in, 329. 



Electrolysis, vibrations and sounds pro- 

 duced by, 217. 



Elliptic functions, new method of ap- 

 proximation applicable to, 57. 



Ellis (A. J.) on clinant geometry, as a 

 means of expressing the general rela- 

 tions of points in a plane, realizing 

 imaginaries, reconciling ordinary al- 

 gebra with plane geometry, and ex- 

 tending the theories of anharmonic 

 ratios, 442. 



on a simple formula and practical 



rule for calculating heights barome- 

 trically without logarithms, 511. 



, Bessel's hypsometric tables, as 



corrected by Plantamour, reduced to 

 English measures and recalculated, 

 517. 



Equations of rotation of a solid body 

 about a fixed point, on, 523. 



, multipartite system of, on the de- 

 gree and weight of the resultant of a, 

 674. 



Erythroglucine, formation of, 265. 



Everett (J. D.), account of observations 

 of atmospheric electricity taken at 

 Windsor, Nova Scotia, 683. 



Fairbairn (W.) on the law of expansion 

 of superheated steam, 53. 



Fauna in the drift, 38. 



Format's theorem of the polygonal num- 

 bers, on, 205, 713. 



Fibrin, artificial production of, from al- 

 bumen, 399 j Postscript, 505. 



Fitton (Dr. W. H.), obituary notice of, 

 iv. 



Fixed stars, note on spectra of the lines 

 of, 444. 



Flint implements in the drift, 38. 



Fluids in motion, thermal effects of, 202. 



Food, experiments on, 121. 



, destination and uses of, 121. 



Forbes (Sir J.), obituary notice of, vi. 



Forchhammer (G-.) on the constitution 

 of sea-water at different depths and 

 in different latitudes, 129. 



Foreign members elected: Despretz 

 (C. M.), Neumann (F. E.), Weber 

 (E. H.), 133 ; Magnus (H. a.), 536 ; 

 Kummer (E. E.), 611 j Steenstrup 

 (J. J. S.), 611. 



Foster (G-. C.), researches into the che- 

 mical constitution of narcotine and of 

 its products of decomposition (Parti.), 

 501. 



Fractional distillation, contribution to 

 the theory of, 534. 



