INDEX. 



641 



between the dates Dec. 30, 1870, and 

 Aug. 31, 1875, 387, 544. 



Miiller (H. W.) and De La Eue (W.) on 

 the length of the spark from a battery 

 of 600, 1200, 1800, and 2400 rod- 

 chloride-of-silver cells, and some phe- 

 nomena attending the discharge of 

 5640 cells, 167. 



Murray (J.), preliminary reports to Prof. 

 W. Thomson on work done on board 

 the 'Challenger,' 387, 471. 



Nanson (E. J.) on the theory of the 

 solution of a system of simultaneous 

 non-linear partial differential equations 

 of the first order, 337. 



Newall (R. S.), admitted, 32. 



Newton's rings, on a new refractometer 

 for measuring the mean refractive index 

 of plates of glass and lenses by the 

 employment of, 393. 



Non-linear partial differential equations 

 of the first order, on the theory of the 

 solution of, 337. 



Numbers, formulae of verification in the 

 partition of, 250. 



Obituary notices of Fellows deceased : — 



Sir William Edmond Logan, i. 



Daniel Hanbury, ii. 



Gustav Rose, iii. 



Christopher Hansteen, v. 



Charles Eugene Delaunay, vii. 



Thomas Hewitt Key, x. 



Sir Charles Wheatstone, xvi. 



Justus Liebig, xxvii. 



Auguste Arthur de la Rive, xxxvii. 

 Observations, preliminary report on, made 



during the earlier part of the voyage of 



H.M.S. ' Challenger,' 387, 569. 

 Ocean, on instruments for recording the 



direction and velocity of currents and 



the temperature of the water at diffe- 

 rent depths in the, 321. 

 Oceanic deposits examined on board 



H.M.S. ' Challenger,' preliminary re- 

 port on, 471. 

 Oldham (T.), royal medal awarded to, 



93. 

 Organ of Corti in mammals, on the, 



346. 

 Ovum, description of a mammalian, in an 



early condition of development, 399. 

 Owen (P. C), letter to the President 



from, 315. 

 Oxygenated blood, on the production of 



glycosuria by the effect of, on the 



liver, 51. 



Palaeozoic corals, on the affinities of cer- 

 tain, 59. 



Parker (W. K.) on the structure and 

 development of the skull in the Ba- 

 trachia: Part II., 136. 



Partition of numbers, formulae of verifi- 

 cation in the, 250. 



Pavy (F. W.) on the production of glyco- 

 suria by the effect of oxygenated blood 

 on the liver, 51. 



Pelagic Decapods, on the development of 

 some, 132. 



Photographs, on reversed, of the solar 

 spectrum beyond the red, obtained on a 

 collodion plate, 186. 



Photometer, on a new, and on the force 

 caused by the communication of heat 

 between a surface and a gas, 388. 



Physiological action of vanadium, on the, 

 40. 



Physiology, structure, and development 

 of Antedon rosaceus, on the, 211, 451. 



Placentation of Hyrax, on the, 151. 



of the lemurs, on the, 409. 



Pocillopora, Millepora, and Stylaster, on 

 the structure of species of the genera, 

 59. 



Podophthalmia, on the development of 

 the crustacean embryo, and the varia- 

 tions of form exhibited in the larvae of 

 38 genera of, 375. 



Poison-fangs of snakes, on the develop- 

 ment and succession of the, 259. 



Presentation of the medals, 89. 



Presents, list of, 115, 155, 244, 330, 410, 

 459. 



President, letter to the, from T. J. P. 

 Jodrell, 316. 



, letter to the, from P. C. Owen, 315. 



President's Address, 72. 



Priestley (J.) on the physiological action 

 of vanadium, 40. 



Prime, on the number of figures in the 

 period of each reciprocal of a, from 

 53,000 to 60,000, 392. 



Prism, a direct-vision compound, pre- 

 sented to the Society by J. P. Gassiot, 

 33. 



Pritchard (U.) on the organ of Corti in 

 mammals, 346. 



Pulse, an inquiry into the cause of the 

 slow, in jaundice, 442. 



Putrefaction and infection, on the optical 

 deportment of the atmosphere in 

 reference to the phenomena of, 171. 



Radiation, on repulsion resulting from : 

 Part III., 276 ; Part IV., 279. 



Radiometer, on the movement of the 

 glass case of a, 409. 



Rainfall, on a secular variation in the, in 

 connexion with the secular variation in 

 amount of sun-spots, 379. 



Refraction of sound, on the, by the atmo- 

 sphere, 164. 



Refractometer, on a new, for measuring 

 the mean refractive index of plates of 

 glass and lenses by the employment of 

 Newton's rings, 393. 



