INDEX. 703 
Meteorology of the English Lake District, 81. 
Mitter (Joun Frzrcuer), Ph.D. On the meteorology of the Lake District, including the results 
of experiments on the fall of rain, the temperature, the dew-point, and the humidity of the 
atmosphere at various heights on the mountains, up to 3166 feet above the sea level, for the 
years 1851, 1852, and 1853, 81. 
O 
Opium, crystalline constituents of, 195. 
P 
Photometer, 3638. 
Powron (Mungo). On solar light, and on a simple photometer, 363. 
Prismatic Spectra of the Flames of compounds of Carbon and Hydrogen, 431. 
Probabilities, on the possibility of combining two or more probabilities of the same event, so as to 
form one definite probability, 369. On the application of the theory of probabilities to the 
question of the combination of testimonies or judgments, 597. 
R 
Roczrs (H. D.), Hon. F.R.S.E. On the laws of structure of the more disturbed zones of the 
earth’s crust, 431. 
Rowney (Tuomas H.), Ph.D, Researches on the amides of the fatty acids, 299. 
s 
Salmonide, on the impregnation of the ova of, 1. 
Salmonide, miscellaneous remarks on, 245. 
Solar Light, 363. 
Solar System, mechanical energies of, 63. 
Stewart (BatFour). On a proposition in the theory of numbers, 407. 
Sunlight. Note on the possible density of the luminiferous medium, and on the mechanical value 
of a cubic mile of sunlight, 57. 
Superposition, on, 271. 
Swan (Witx1am). On errors caused by imperfect inversion of the magnet, on observations of mag- 
netic declination, 349. On the prismatic spectra of the flames of compounds of carbon and 
hydrogen, 431. 
Tt 
Tarzot (H. F.), F.R.S. On Fermat’s theorem, 403. 
Terror (Bishop). On the possibility of combining two or more probabilities of the same event, 
so as to form one definite probability, 369. 
Theory of Numbers, on a proposition in, 407. 
Thermo-Electric Currents, 123. 
Tomson (Witt1am). Note on the possible density of the luminiferous medium, and on the mechanical 
value of a cubic mile of sunlight, 57. On the mechanical energies of the solar system, 63. On 
the dynamical theory of heat. Part V. Thermo-electric currents, 123. 
