486 



Index. 



Ure, Dr., on some of the leading doc. 



trines of caloric, 214. 

 Urine of the amphibia, on, lxxv. 

 Uterine system, oil a malconformation 



of, 210. 



W. 



Water, action of iron upon, xxxv — va- 

 pour of, elasticity of, 214 — specific 

 gravity of, 339. 



Watt, Dr., on the formation of the 

 rainbow, 131. 



Wavellite, composition of, 381. 



Webbe, Capt., survey of the province 

 of Keemaon by, 219. 



Wernerian Natural History Society, re- 

 view of the memoirs of, 62, 138. 



Wilson, James, Esq., on some species of 



the genus Falco, 137. 

 Wodanium, 74, 232. 



Y. 



Yellow dye, new, 73. 



"Young, Dr. Thomas, on the advantages 

 of multiplied observations in the phy- 

 sical sciences, and on the density of 

 the earth, 218. 



Yu, Chinese stone, 313. 



Zinc, specific heat of, 167. 

 Zumicacid same as thelactic, lv. 



END OF VOL. XIII. 



ERRATA FOR VOL. XIII. 



Page 21 6, line 4 (from bottom), for 536° read 656°. 

 3 (from bottom), for 680° read 680°. 

 227, line 'it for poles read equator. 

 377, line 5 and 10 from bottom, for Corbeth read Carbeth. 



442, line 8 from bottom, for 2 atom read 1 atom. 



443, line 20,/or eight cubic inches of oxygen gas, read eight cubic inches of 



sulphurous acid gas. 



