486 



INDEX. 



Tomes (J.) on the structure of the teeth, 



454. 

 Tungsten, tungstate of, and potash, 395. 

 Turpentine, stearopten of, 396 ; oil of, 



specific inductive capacity of, 422. 

 Urea, lactate of, 478. 

 Verrier (M.), method of obtaining pure 



oxide of phosphorus, 315. 

 Vision, physiology of, 461. 

 Vogel (M.), preparation of arseniuretted 



hydrogen, 395. 

 Voltaic batteries, on the construction of, 



54, 135, 171, 270; on the platina 



electrodes of, 379. 



combination, new, 430. 



Waldie (D.) on combustion and flame, 



86, 424. 



Water, on the chemical reactions of, 234. 

 Wheatstone (Prof.) on the physiology 



of vision, 461. 

 Whewell (Rev. W.) on the deduction of 



the laws of the tides, 457. 

 Williamson (Mr.) on the distribution of 



organic remains in the oolitic series 



of Yorkshire, 229. 

 Xyloidine, on, 407. 



Yorkshire, distribution of organic re- 

 mains in the oolitic series of, 229. 

 Z. Y. on a difficulty connected with a 



demonstration of Euclid, 434. 

 Zinc and potassium, new double salt of, 



393. 

 Zinc, chloride of, its action on alcohol, 



475. 



END OF THE THIRTEENTH VOLUME. 



LONDON: 



PRINTED BY RICHARD AND JOHN E. TAYtOR, 

 BED tlON COtJRT, FLEET STREET, 



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