INDEX. 171 



Respiration, influence of the eighth pair of nerves on the organs 



of, illustrated by experiments and remarks, x. 292 



how to put a stop to, by the brain, xiv. 98 



Rete mucosum, the seat of touch, ii. 9 



— of the negro, observations on, xii. 125 



Retina, insensibility of, xix. 368 



Retinasphaltum discovered in the independent coal formation, 



xi. 221 

 Retorts for gas, observations on, vi. 71 

 Rbvbro and Boussinqoull (MM.), account by, of the different 



masses of iron found on the eastern Cordillera of the Andes, 



xvii. 394 

 Rey (M.), notice of the mineralogical discoveries of, iv. 237 

 (Jean), bibliographical notice of, xi. 74. Essays of, on the 



calcination of metals, 76, 260. xii. 54, 294. xiii. 136, 



278 

 Reynold's (Dr. P. G.), outline of a new theory of meteors, 



vii. 319 

 Rhenish wines, account of, xviii. 130 

 Rhinoceros, skin of, musket-shot proof, vii. 196 

 ■ account of a new species of, found in South Africa, 



xi?. 163 

 Rhubarb, analysis of, x. 288 



. vegetable alkali discovered in,xvi. 172 



Richland (M.), experiments and inquiries of, on the respiration 



of plants, iii. 199 

 Richer AND (M.), on a surgical operation, in which parts of two 



ribs and of the pleura were removed, vi. 47 

 Rider (Mr. Job.), description of the rotatory steam-engine in- 

 vented by, xvi. 267. Remarks thereon, 269 

 RiDOLFi (Marquess of), on a method of separating platina from 



other metallic substances, which are found with it in the state 



of ore, i. 259 ; and on the native caustic lime of Tuscany, 



260 

 • — notice of the improvement of Woulfe's apparatus by, 



xii. 179 



