INDEX. 



409 



of the expansive action of heat, &c., 

 388. 



Regnault (V.), elected foreign member, 

 229. 



, Nouvelles recherches sur la com- 



pressibilite des gaz, &c., 298 ; list of his 

 researches, 299. 



Retina, the production of pictures on, 

 380. 



Roberts (J.), new forms of instruments 

 for the correction of compass errors, 

 &c., 212. 



Robertson (A. J.) on the theory of 

 waves, 231. 



Rocks, foliation and cleavage of, 152 ; 

 gradations of ; arches of foUatiou ; cor- 

 respondence between foliation and 

 cleavage, 153; physical features of, in 

 the Highlands, 154. 



Rosse (Earl of). Royal medal awarded to, 

 113. 



Rotifera, discovery of sex of, 251. 



Royal medals, awarded to the Earl of 

 Rosse, 113 ; G. Newport, 114 ; J. P. 

 Joule, 243 ; T. H. Huxley, 244 ; C. 

 Darwin, 355. 



Rubiadine, a product of rubian, 208. 



Rubian, attraction of, for porous sub- 

 stances ; its properties and formula ; 

 products of decomposition of, 28 ; im- 

 portance of conversion of,intoahzarine, 

 30. 



, action of alkahes on; decomposable 



into alizarine, verantine, 28 ; rubire- 

 tine, rubianine, 29 ; rubiadine, 208 ; 

 rubiafine, rubiagine, rubiadipine, 209 ; 

 action of erythrozym on, 212. 



Rumford medal, awarded to G. G. Stokes, 

 243. 



Russell (Lord John), letter from, an- 

 nouncing renewal of Government 

 grant, 13. 



Rutherford (W.) on the extension 

 of the value of the ratio . of the 

 circumference of a circle to its dia- 

 meter, 274. 



Sabine (Col. E.) on the annual variation 



of the magnetic declination, 73. 

 on periodical laws discoverable in 



the mean effects of the larger magnetic 



distm-bances. No. I., 30 ; No. IL, 174. 

 on the periodic and non-periodic 



variations of temperature at Toronto, 



from 1841 to 1852, 284. 

 on the influence of the moon on 



the magnetic direction at Toronto, St. 



Helena, Hobarton, 338. 

 Salmonidse, observations on the ova of, 



149. 



Salpa, anatomy of ; reproduction of, 38 ; 



harmony with Pyrosoma ; distinction 

 between organs and generations of, 

 39 ; allied to Doliolum, 41. 

 Savory (W.) on the valves of the heart, 

 133. 



Schlagintweit (A.), researches on the dis- 

 tribution of vegetables in the Alps, 

 &c., 12. 



Schlagintweit (H.) on the distribution 

 of temperature in the Alps, 6. 



Schumacher (H. C.), obituary notice of, 

 115. 



Schunck (E.) on rubian and its products 

 of decomposition. Part I., 27 ; Part II., 

 208. 



Scientific Societies, central building for, 

 349. 



Scoparine, how obtained, its formula, 5. 



Scoresby (Rev. W.), an inquiry into some 

 of the circumstances and principles 

 which regulate the production of 

 pictures on the retina of the human 

 eye, 380. 



Sea, sounding in 7706 fathoms, deeper 

 than height of Himalayas, 276. 



Sea-water, density of, affected by ice, 

 305 ; phenomena of currents of, 306. 



Secreting organs of the human body, 

 typical forms of, 340 ; scientific no- 

 menclature for, 341. 



Shanks (W.) on the extension of the 

 value of the base of Napier's logarithms, 

 &c., 397. 



Sharpe (D.) on the arrangement of the 



foliation and cleavage of the rocks of 



the north of Scotland, 152. 

 Silvester (T. H.) on the typical forms of 



the large secreting organs of the human 



body, 340. 

 Snow-line in Alps, variations of, 8. 

 Soap, made with oxide of tetraethylam- 



monium, 43. 

 Solar rays, reciprocal action of ; chemical 



action of, 317 ; theory of explanation 



of, 318. 



Sparteine, how obtained; nitropicrate of; 

 formula of, 5 ; effects of, 6. 



Spectrum, description of ; mode of using ; 

 colours seen in, 44 ; ratio of undula- 

 tions, 45. 



Spermatozoa, direct agency of, on ova, 

 214 ; experiments with, 216 ; organs 

 of special form in animal structure, 217. 



Spinal chord, on certain functions of, 

 297 ; coiTespondence between fibrous 

 arrangement of, and chiasma of optic 

 nerve, 298. 



, researches into the structure of, 1. 



nerves, and the respiratory nervous 



centres, relations between, 1 ; origin 

 of, 3. 



30 



