534 



INDEX. 



Tonge (M.), observations on the develop- 

 ment of the semilunar valves of the aorta 

 and pulmonary artery of the heart of the 

 chick, 329. 



Torsion and flexure, experiments on, for 

 the determination of rigidities, 248. 



Toynbee (J.), obituary notice of, xlvii. 



Tristram (E.ev. H. B.) on the geographi- 

 cal and geological relations of the fauna 

 and flor» of Palestine, 316. 



Turner (W.), notes on variations in the 

 origin of the long buccal branch of the 

 fifth cranial nerve, 456. 



Uniquadric homographics, undevelopable, 

 memoh' on, 389. 



Urine, chemical nature, composition, com- 

 binations, and metamorphoses of co- 

 louring-matter of, 217. 



, on a crystalhne fatty acid from, 



135. 



-■ , on oxalurate of ammonia as a con- 

 stituent of, 140. 



, on the colouring and extractive 



matters of: I., V3 ; IL, 126. 



Uromelanuie, 217. 



Vanadium, researches on, 220 ; oxides of, 

 224 J oxychlorides of, 226 j nitrides of, 

 228 



Yaux (W. S. W.) admitted, 437. 



Yegetation, influence of, on composition 

 of carbonate-of-hme waters, 189. 



Yems of bat's v^^ing, microscopical charac- 

 ters of muscular coat of, 342. 



Yibration, on the commmiication of, from 



a vibrating body to a surrounding gas, 

 471. 



Yice-presidents appointed, ].89, 209. 



Walker (Col, J. C), letter concerning ob- 

 servations in India to be made by Mr. 

 Hennessey and Lieut. Herschel, 293. 



Warington (E>.), obituary notice of, xlix. 



• on some alterations in the compo- 

 sition of carbonate-of-lime vs^aters, de- 

 pending on the mfluence of vegetation, 

 animal-life, and season, 189. 



Waves in Hquids, on, 344. 



Weight of brain in different races of man, 

 236. 



Whewell (Rev. W.), obituary notice of, h. 

 Whymper (E.), exploration of North 



G-reenland, 174. 

 Williamson (A. W.), note on the calculus 



of chemical operations, 72. 

 Wohlerite shown to belong to the cli- 



norhombic system, 319. 

 Wood (J.), variations in human myology 



observed during the winter session of 



1867-68 at King's College, London, 



483. 



Y^ood (IST,), obituary notice of, Ixi. 

 YA-ight (R. J.) on an easy method of 



measmung approximately the intensity 



of total dayhght, 525. 

 Wrottesley (Lord), obituary notice of, 



1X111 . 



Zodiacal light, observations of, by Mr. 

 Hennessey, 169. 



END OF THE SIXTEENTH YOLrME. 



PRINTED BY TAYLOR AND ERANCIS, 

 BED LION COURT; FLEET STREET. 



