654 



INDEX. 



Heart, arrangement of muscular fibres 



of, 433. 

 Helmholtz (H.), elected foreign member, 



473. 



Henfrey (A..) on the anatomy of Vic- 

 toria Regia, 14. 



, obituary notice of, xviii. 



Herschel (Sir J. F. W.), remarks on 

 colour-blindness, 72. 



on the formula investigated by 



Dr. Brinkley, for the general term in 

 the development of Lagrange's ex- 

 pression for the summation of series 

 and for successive integration, 500. 

 Hicks (J. B.) on certain sensory organs 



in insects, 25. 



Hofmann (A. W.), notes of researches 

 on the poly-ammonias : No. VI. new 

 derivatives of phenylamine and ethyl- 

 amine, 104 ; No. VII. on the diatomic 

 ammonias, 224 j No. VIII. action 

 of nitrous acid upon nitrophenylene- 

 diamine, 495 ; No. IX. remarks on 

 anomalous vapour-densities, 596, 644; 

 No. X. on sulphamidobenzamine, a 

 new base ; and some remarks upon 

 ureas and so-called ureas, 598, 644. 



, researches on the phosphorus bases : 



No. VI., 100; No. VII. triphospho- 

 nium compounds, 189 ; No. VIII. 

 oxide of triethylphosphine, 603, 645; 

 No. IX. phospharsonium compounds, 

 608, 645 ; No. X. metamorphoses of 

 bromide of bromethylated triethyl- 

 phosphonium, 610, 645 ; No. XL ex- 

 periments in the methyl and in the 

 methylene-series, 613, 645 ; No. XII, 

 relations between the monoatomic and 

 the polyatomic bases, 619, 645. 



, contributions to the history of the 



phosphorus bases, Parts I., II., III., 

 568, 644. 



, contributions towards the history 



of the monamines : No.III. compound 

 ammonias by inverse substitution, 

 594. 



, researches on the nitrogen bases, 



621. 



Hofmann (P. W.), contributions towards 

 the history of azobenzol and benzidine, 

 585, 644. 



Holzmann (M.) on the effect of the pre- 

 sence of metals and metalloids upon 

 the electric conductivity of pure cop- 

 per, 460. 



Hopkins (T.) on the forces that pro- 

 duce the great currents of the air and 

 of the ocean, 235. 



Hopkins (W.) on the construction of a 

 new calorimeter for determining the 



radiating powers of surfaces, and its 

 application to the surfaces of various 

 mineral substances, 514. 



Horsfield (T.), obituary notice of, xix. 



Howard de Walden (Lord), letter on a 

 recent severe thunder-storm in Bel- 

 gium, 359. 



Humboldt (A. von), obituary Notice of, 

 xxxix. 



Ice, account of a remarkable shower of, 

 468. 



, theories and experiments at or near 



melting-point of, 152. 



Insects, sensory organs in, 25. 



Insulating bodies, electric properties 

 of, 2. 



lodobenzoic acid, new method of sub- 

 stitution and formation of, 309. 



lodotoluylic acid, new method of sub- 

 stitution and formation of, 309. 



Isoprene, on, 516. 



Jenkin (F.) on the insulating properties 

 of gutta percha, 409. 



Johnson (M. J.), obituary notice of, xxi. 



Jones (T. W.), analysis of my sight, 

 with a view to ascertain the focal 

 power of my eyes for horizontal and 

 for vertical rays, and to determine 

 whether they possess a power of ad- 

 justment, 381. 



Joule (J. P.) on the thermal effects of 

 fluids in motion, 502 ; temperature of 

 bodies moving in air, 519. 



Kolliker(A.) on the frequent occurrence 

 of vegetable parasites in the hard 

 structures of animals, 95. 



on the structure of the chorda 



dorsalis of the Plagiostomes and some 

 other fishes, and on the relation of its 

 proper sheath to the development of 

 the vertebra, 214. 



, elected foreign member, 473. 



Kopp (H.) on the relation between 

 boiling-point and composition in or- 

 ganic compounds, 463. 



Lacaze-Duthiers (F. J. H.), note re- 

 specting the circulation of gasteropo- 

 dous Mollusca and the supposed aqui- 

 ferous apparatus of the Lamellibran- 

 chiata, 193. 



, natural history of the purple of 



the ancients, 579, 644. 



Lamellibranchiata, on the supposed 

 aquiferous apparatus of, 1S3. 



Lawes (J. B.) on the sources of the 

 nitrogen of vegetation ; with special 



