480 



Index, 



Tanning powers of astringents, on the 

 means of ascertaining the, 401. 



Temperature of tlie surface water of the 

 Atlantic, JMr. De la Ikclic on, 333. 



Thcnnomctrical state of the globe, S94. 



Thomson, Dr. T. analysis of his work on 

 the First Principles of Chemistry, 1 38 

 — table of chemical equivalents by, 293 

 ■ — answer to Mr. Rainy's paper on the 

 specific gravity of hydrogen gas, 35V — 

 on the method of analyzing sulphate of 

 zinc, 363 — on carbono-phosplip.te of 

 soda, 38 1 — on three new salts of soda, 

 43.5. 



Tiarks, Dr. J. L. results of his chronome- 

 trical observations, 224. 



Traill, Dr. T. 8. on Sir H. Davy's mode 

 of protecting the copper of ships, 1 6. 



Tredgold, Mr. T. his experiments on the 

 elasticity and strength of hard and soft 

 steel, 220. 



Trichomanes elegaps, 67. 



Turner, Dr. E. and Christison, Dr. R. on 

 oil and coal gas, 190. 



U. 



Value of leases, 335. 



Variation of the compass, I . 



Vegetable and animal economy, 218. 



Velocity of sound, account of experiments 

 on the velocity of, by Dr. JMoll and Dr. 

 Van Reek, 268— table of the results of 

 experiments on it by various philoso- 

 phers, 2Hl. 



Venus, the planet, Mr. Emmett's obser- 

 vations on, 410. 



Vertebra' of rc})tiles fCnd an)phibia, 3S6. 



Vision, seat of, Mr. J. M'allan on, 258. 



Volcanic sulphur contains selenium, 234, 



W. 



Wallan, Mr. J. on the seat of vision, 258. 

 Water, surface, of the Atlantic, Mr. De 



la Beche on, 333. 

 WoUaston, Dr. on the apparent direction 



of the eyes in a portrait, 63. 

 Woods, Mr. notice of his paper on the 



geoloiiy of the tract between Exeter and 



Bndport, 230. 



Umbilicits of marsupial animals, 235. 

 .Unicom, East Indian, 388. 

 Ursua, on the genus, 59. 



Valleys of denudation, 19. 



Z. 



Zetland islands, 393. 



Zinc, sulphate of, Dr. Thomson on the 



method of analyzing, 36.3. 

 Zoology, 17, 59, 97, 148, 151, 152, 193, 



225, 228, 229, 235, 241, 306, 315, 



337,384,396,42^,471. 



END OF VOL. X. 



Printed by C. Baldwin, New Bridge-street, London. 



