560 



INDEX. 



Tactic, on, 45, 144. 



Temperature, on the reduction of ob- 

 servations of underground, 23, 121. 



Terephthalic acid and its derivatives, 

 on, 541. 



Thomson (Prof. W.) on the reduction 

 of observations of underground 

 temperature, 23, 121 ; on the true 

 and false discharge of a coiled elec- 

 tric cable, 202. 



Tichanowitsch (M.) on the electro- 

 lysis of some organic bodies, 308. 



Tomlinson (C.) on the action of cer- 

 tain vapours on films, 111; on the 

 cohesion-figures of liquids, 249. 



Torpedo, on the electric function of 

 the, 68. 



Triadic arrangements of fifteen sym- 

 bols, on the problem respecting, 

 510. 



Troost (M.) on the preparation of 

 some native sulphurets, 56. 



Tyndall (Dr.) on the physical basis 

 of solar chemistry, 147 ; on the 

 absorption and radiation of heat by 

 gases and vapours, 169, 273, 377 ; 

 on lunar radiation, 470; on the 

 blue band of the lithium spectrum, 

 473. 



Types, on the theory of chemical, 15. 



Ureas, on the so-called, 160. 



Vapour-densities, on anomalous, 158. 



Vapours, on the action of certain, on 

 films, 111; on the radiation of heat 

 by, 169, 273. 



Vaughan (D.) on static and dynamic 



stability in the secondary systems, 

 489. 



Vogt (M.) on the preparation and 

 properties of benzylic mercaptan, 

 302. 



Wanklyn (J. A.) on the movements 

 of gases, 211. 



Water, on a method for determining 

 the hardness of, 518. 



Weber (Prof. W.) on the measure- 

 ment of electrical resistance, 226, 

 261. 



Weiss (M.) on the changes produced 

 in the position of the fixed lines 

 in the spectrum of hyponitric acid, 

 80. 



Wilson (J. M.) on the readings of 

 the graduated arc in spectrum- 

 analysis, and distortion of the spec- 

 trum, 364. 



(Mr.) on a method for de- 

 termining the hardness of water, 

 518. 



Woods (Dr.) on a photographic mi- 

 crometer, 166. 



Woolhouse (W. S. B.) on the problem 

 respecting certain triadic arrange- 

 ments of fifteen symbols, 510. 



Wurtz (M.) on lactic acid, 300 ; on 

 polyethylenic alcohols, 304. 



Xanthine, on the artificial preparation 

 of, 137. 



Zenger (Prof, von) on the measure- 

 ment of the intensity of electric 

 currents, 529. 



END OF THE TWENTY-SECOND VOLUME. 



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