702 INDEX. 



Dynamical Top, for exhibiting the phenomena of the motion of a system of invariable form about a 

 fixed point, with some suggestions as to the earth's motion, 559. 



E 



Earth's Crust, on the laws of structure of the more disturbed zones of, 431. 



English Lake District, on the meteorology of, 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. 



Ethyl and Amyl, action of halogen compounds of, on some vegetable alkaloids, 27. 



Fermat's Theorem, 403. 



Forbes (James D.), D.C.L. Further experiments and remarks on the measurement of heights by the 

 boiling point of water, 235. 



G 



Gregory (William), M.D. On new forms of marine Diatomacese, found in the Firth of Clyde and 

 Loch Fine, 473. 



H 



Heat, dynamical theory of, 123. 

 Heights, measurement of, by the boiling-point, 23 5. 



How (Henry). On the action of halogen compounds of ethyl and amyl on some vegetable alka- 

 loids, 27. 

 Hygrometer. On a new hygrometer, or dew-point instrument, 15. 



Involuntary Muscular Fibre, on the minute structure of, 549. 



Iodine. A method of substituting hydrogen for iodine in organic compounds, 49. 



Iodopyromeconic Acid, 49. 



K 



Kelland (Rev. Philip), M.A. On superposition, 271. On a problem in combinations, 359. 



L 



Lister (Joseph), F.R.C.S. On the minute structure of involuntary muscular fibre, 549. 



M 



Magnetic Declination. On errors caused by imperfect inversion of the magnet, in observations of 

 magnetic declination, 349. 



Maxwell (James Clerk), B.A. Experiments on colour, as perceived by the eye, with remarks on 

 colour-blindness, 275. On a dynamical top, for exhibiting the phenomena of the motion of a 

 system of invariable form about a fixed point, with some suggestions as to the earth's mo- 

 tion, 557. 



