INDEX. 



499 



Respiration of insects, on, 403, 481. 



and irritability in animals, on, 



105. 



Respiratory organs, their influence in 

 regulating the blood in the heart, 

 342; of the leech, 206. 



Rigaud (Prof.) on Harriot's astrono- 

 mical observations, 125. 



Rigg (R.) on the vinous, acetous, and 

 putrefactive fermentations of vege- 

 table matter, 406. 



on the chemical changes during 



germination, 408. 



Ritchie (Dr.) on the phenomena of 

 endosmose and exosmose, 61. 



, researches in voltaic electricity, 



99. 



on the law which connects the 



various magneto-electric phenome- 

 na discovered by Faraday, 159. 



, researches in electro-magnetism, 



181. 



on the discrepancy between the 



velocity of sound in air, and that of 

 theory, 458. 



on the conducting powers of 



wires for electricity, and on the 

 heat developed in metallic and li- 

 quid conductors, 482. 



Rivers, on the ground-ice of, 330. 



Robinson (T. C), description of a 

 mountain barometer, 40. 



Rocks, thermo-electricity of, 124. 



Roget (Dr.), the thanks of the Royal 

 Society given to, 364. 



Roos (Capt. F. T. de), account of the 

 recovery of the treasure and stores 

 of the Thetis, 266. 



Ross (Capt.), remarks on the supposed 

 loss of, 1 54 ; his return noticed, 234. 



Ross (Capt. J. C.) on the position of 

 the north magnetic pole, 254. 



Royal medals, some observations re- 

 lative to the, 215, 221, 306. 



, essays for the, 405, 410. 



. awarded to Sir David Brew- 

 ster and Dr. Daubeny, 1 1 ; to Dr. 

 Dal ton, 219 ; to J. Ivory, Esq., Sir 

 H. Davy, and Dr. Wollaston, 220 ; 

 to Prof. Struve and Prof. Encke, 

 221 ; to Sir C. Bell, Prof. Mitscher- 

 lich, SirD. Brewster, and M. Balard, 

 221 ; to Prof. DeCandolle, 222; to 

 J. W. Lubbock, Esq., and C. Lyell, 

 Esq., 306 ; to Sir John Herschel, 

 222, 443 ; to Prof. Faraday and Sir 

 W. R. Hamilton, 349. 



Rudge (E.) on the position of the 

 south magnetic pole, 323. 



Sabine (Major), experiments on the 

 length of the seconds' pendulum, 66. 



on Mr. Douglas's paper on the 



western coast of N. America, 471. 



Salmon, on the lens of the, 367. 



Salt, a preventive of the dry-rot in 

 ships, 482. 



Salts, on the constitution of, 453. 



Santa Maria, island of, 348. 



Scarpa (A.), notice of, 153. 



Schumacher (Prof.) on the imperial 

 standard troy pound weight, 409. 



Scoresby (Rev. W.) on determining 

 the thickness of solid substances, 67. 



Sea, on the temperature of the, 317. 



Sensation, physiology of the nerves of, 

 205, 283, 331. 



Sensibility, not impaired in hyberna- 

 tion, 106. 



Sesquicarbonate of ammonia, 207. 



Sewell (Prof.) on the use of the false 

 tongue in foals, 130. 



Shaw (J.), notice of, 149. 



Shell, artificial substance resembling, 

 375. 



Shells, on the structure of, 201. 



, difficulty of distinguishing cer- 

 tain genera of, 340. 



Shingle beaches, motions of, 276. 



Ships, on the local attraction of, 43 ; 

 new mode of propelling, 48 ; on the 

 dry-rot in, 482. 



Sidereal catalogue, new, 413. 



Silver, equivalent number for, 197. 



Sinclair (Sir J.), notice of, 438. 



Skey (F.) on the muscular fibre of ani- 

 mal and organic life, 462, 484. 



Skulls, on the size and capacity of the 

 cavity of, 398. 



Sleep, on the nature of, 179. 



of hybernating animals, on the, 



106. 



Smithson (J. L.) , notice of the life 

 and works of, 8. 



Smyth (Capt.) on the site and origin 

 of Graham's Island, 101. 



,report on Barlow's fluid-lens tele- 

 scope, 247. 



Soda, subarseniate of, experiments on, 

 201 ; biphosphate of, experiments 

 on, 209. 



Solar rays, magnetic influence of the, 

 175, 176. 



— rays that occasion heat, on, 457. 



