.556 



INDEX to VOL. XXII. 



Absorption, remarks on, 377. 



Aerolites, on the formation of, 442. 

 Airy (G. B.) on a supposed failure of 



the calculus of variations, 12; on 



a projection by balance of errors 



for maps, 409; on the circularity 



of the sun's disc, 532. 

 Amalgams, experiments on some, 



554. 

 Ammonias, on comjiound, by inverse 



substitution, 156. 

 Antimony, on the equivalent of, 307. 

 Arsenic, on the nature of the deposit 



in Reinsch's test for, 328. 



bases, researches on the, 473. 



Atkinson's (Dr. E.) chemical notices, 



55, 135, 515. 

 Atomic weights, new determinations 



of, 138. 

 Azobenzol, on the constitution of, 70. 

 Babinet (M.) on terrestrial refraction, 



406. 

 Benzidine, on the constitution of, 70. 

 Benzoyle, on the bisulphide of, 303. 

 Benzylic mercaptans, on the prepa~ 



ration and properties of, 302. 

 Boase (Dr. H. S.) on the existence of 



a resisting medium and a repulsive 



force, 458. 

 Books, new : — Ferrer's Elementary 



Treatise on Trilinear Coordinates, 



240; Todhunter's Theory of Equa- 

 tions, 384. 

 Boric ethide, researches on, 64. 

 Boutlerow (M.) on the action of 



sodium-alcohol on iodoform, 302. 

 Brewster (Sir D.) on the action of 



uncrystallized films upon common 



and polarized light, 269. 

 Bromphenylamine, on, 7'S. 

 Bunsen (Prof. R.) on the salts of 



caesium, 55 ; on chemical analysis 



by spectrum - observations, 329, 

 498. 



Caesium, on the preparation, atomic 

 weight, and compounds of, 55, 340, 

 498. 



Calculus of variations, on a supposed 

 failure of the, 1 2 ; on the solution 

 of a problem in the, 108. 



Carbonic acid, on the conversion of, 

 into formic acid, 299 ; on the pro- 

 perties of liquid, 485. 



Cauchy's theorem of arrangements, on 

 a generalization of, 378. 



Cayley (A.) on the curves situate on 

 a surface of the second order, 35 ; 

 on the cubic centres of a line, 433. 



Cerium, on compounds of, 216. 



Challis (Prof.) on the solution of a 

 problem in the calculus of varia- 

 tions, 108. 



Chapman (Prof. J.) on the Klap- 

 rothine or lazulite of North Caro- 

 lina, 81, 247. 



Chemical Notices from foreign jour- 

 nals, 55, 135, 515. 



Chemistrv, solar, on the physical basis 

 of, 147. 



Chlorphenylamine, on the preparation 

 and constitution of, 73. 



Colour, on the sensibility of the eye 

 to, 220. 



Combustion in rarefied air, on, 549. 



Copper, on the silicates of, from Chile, 

 361 ; on the electric conducting 

 power of, and its alloys, 545. 



Corenwiuder (M.) on the action of 

 sulphur and aqueous vapour at high 

 temperatures, 521. 



Creatinine, on the relations between 

 guanine, xanthine, caffeine, theo- 

 hromine and, 136. 



Curtis (A H.) on the gyroscope, 396. 



