INDEX. 



551 



Probabilities, on the application of the 

 theory of, to some questions of evi- 

 dence, 146. 



Protein compounds, on a test for, 

 478. 



Pyroglycerin, description of, 394. 



Quadratic functions, on a new class of 

 theorems in elimination between, 

 213, 363. 



Quaternions, on the geometrical in- 

 terpretation of, 108. 



Rabourdin (M.) on the preparation of 

 atropia, 542. 



Rainey (G.) on the structure and use 

 of the ligamentum rotundum uteri, 

 with some observations upon the 

 change which takes place in the 

 structure of the uterus during utero- 

 gestation, 223. 



Rammelsberg' (C.) on the hyposklerite 

 of Arendal, 237. 



Rankine (W. J. M.) on the anomaly- 

 ruler, 291. 



Reynoso (M. A.) on the action of 

 bases upon salts, 310. 



Richardson (J.) on a remarkable fall 

 of aerolites, 220. 



Robertson (A. J.J on the positive wave 

 of translation, 512. 



Rocks, on striated and polished, in 

 the lake district of Westmoreland, 

 486. 



Roman pavement, on the structure 

 and arrangement of the tesserse in 

 a, discovered at Cirencester, 119. 



Rosse (Earl of) on the nebulae, 305. 



Rotation of a rigid body about a fixed 

 point, on the, 440. 



Royal Astronomical Society, proceed- 

 ings of the, 69. 



Royal Society, proceedings of the, 57, 

 219, 302. 



Sabine (Lieut.-Col.) on the means 

 adopted in the British Colonial 

 Magnetic Observatories for deter- 

 mining the absolute values, secular 

 change, and annual variation of 

 the magnetic force, 228. 



Salts, on the separation of, by diffusion, 

 254 ; on the action of bases upon, 

 310. 



Schonbein (M.) on the decomposition 

 of metallic acids by iodide of potas- 

 sium, 318. 



Silver, on the discoloration of, by 

 boiled eggs, 477. 



Smith (J. L.) on emery, and the mi- 

 nerals associated with it, 396. 



Smythies (J. K.) on the theory of at- 

 traction, 301, 340. 



Soap-test, on the action of the, upon 

 water containing a salt of magnesia 

 only, and likewise upon water con- 

 taining a salt of magnesia and a salt 

 of lime, 171. 



Sobrero (M.) on pyroglycerin, 394. 



Space, on the knowledge of, 230. 



Speculum grinding and polishing ma- 

 chine, on improvements in a, 69. 



Spottiswoode (W.) on the geometrical 

 interpretation of quaternions, 108 ; 

 on a geometrical theorem, 289. 



Squares, least, remarks on the method 

 of, 321. 



Stars forming binary and multiple 

 groups, on the alleged evidence for 

 a connexion between, 401. 



Steam, on the magnetism of, 283 ; on 

 the temperature of, and its corre- 

 sponding pressure, 304; on a re- 

 markable property of, 386. 



Stenhouse (Dr. J.) on the oils produced 

 by the action of sulphuric acid upon 

 various classes of vegetables, 226 ; 

 on aloine, 481. 



Stokes (Prof.) on the numerical cal- 

 culation of a class of definite inte- 

 grals and infinite series, 68. 



Strecker (M. A.) on the artificial for- 

 mation of lactic acid andalanin, 308; 

 on a new mode of preparing ethyal- 

 mina, and on ethamic acid, 312. 



Succinic acid, production of, by fer- 

 mentation, 397 ; on the presence of, 

 in the human body, 473. 



Sugar, on the copper test for, 314. 



Sulphur, chlorine and oxygen, new 

 compound of, 474 ; on the chlorides 

 of, 476. 



Sulphuric acid, on the separation of, 

 from sulphate of lead,, by chloride 

 of barium, 166. 



Sulphurous acid, preparation of, 394. 



Sykes (Lieut.-Col.) on some meteoro- 

 logical observations taken in India, 

 220. 



Sylvester (J. J.) on an instantaneous 

 demonstration of Pascal's theorem, 

 212, 363 ; on a new class of theo- 

 rems in elimination between qua- 

 dratic functions, 213, 363; on the 

 solution of a system of equations, 



