552 



INDEX. 



M'Kendrick (J. G.) and Dewar (J.) on the 

 physiological action of the chinoline and 

 pyridine bases, 432. 



Magnetic declination, on the annual vari- 

 ation of the, 254. 



observations at Zi-Ka-Wei, 440. 



Magnetism, on the 26-day period of ter- 

 restrial, 43. 



Magnetized copper wire, experiments on 

 a, 311. 



Magnets and electric conductors, on the 

 attractions of, 245. 



Maine (Sir H. S.), admitted, 380. 



Male of Thaumops pellucida, on the, 42. 



Mallet (E.), addition to the paper "Vol- 

 canic energy : an attempt to develop 

 its true origin and cosmical relations," 

 328. 



" on the alleged expansion in volume 

 of various substances in passing by re- 

 frigeration from the state of liquid 

 fusion to that of solidification, 366. 



on the mechanism of Stromboli, 473, 

 496. 



Mammalia, on the intracellular develop- 

 ment of blood-corpuscles in, 243. 



Maxwell (J. C.) on double refraction in a 

 viscous fluid in motion, 46. 



Mechanism of Stromboli, on the, 473, 496. 



Medals, presentation of the, 10. 



Metallic and metalloidal vapours, on 

 the absorption of great thicknesses of, 

 371. 



Meteorological use of a planimeter, 435. 



Mills (E. J.), admitted, 362. 



Minute anatomy of the alimentary canal, 

 on the, 293. 



Molecular structure, on the evidence of 

 variation in, 372. 



of vapours, on the, in connexion 



with their densities, 374. 



Mollusca, contributions to the develop- 

 mental history of the, 232. 



Moseley (H. N.) on the structure and de- 

 velopment of Peripatus capcnsis, 344. 



Mucous membrane of the uterus, on the 

 structure of the, and its periodical 

 changes, 297. 



Naja tripudians and other Indian venom- 

 ous snakes, on the nature and physio- 

 logical action of the poison of, 68. 



Nebulae, on the motions of some of the, 

 towards or from the earth, 251. 



Negretti (H.) and Zambra (J. W.) on a 

 new deep-sea thermometer, 238. 



Nervous system of Actinia, on the, 44, 

 263. 



Noble (Capt.) and Abel (F. A.), researches 

 on explosives : fired gunpowder, 408. 



Numerical value of TT, on certain discre- 

 pancies in the published, 45, 



Obituary notices of Fellows deceased : 

 Archibald Smith, i. 



Observations, spectroscopic, of the sun, 

 247. 



Orcins, contributions to the history of the : 

 No. IV. On the iodo-derivatives of the 

 orcins, 53. 



Organisms, on certain, occurring in the 

 liquor sanguinis, 391. 



Oscillation, on the uniform wave of, 350. 



Osier (W.), an account of certain organ- 

 isms occurring in the liquor saneuinis, 

 391. 



Owen (E.) on the alleged existence of re- 

 mains of a lemming in cave-deposits of 

 England, 364. 



Parkes (E. A.) on the influence of brandy 

 on the bodily temperature, the pulse, 

 and the respirations of healthy men, 

 172. 



Periodicity of rainfall, on the, 286. 



Peripatus capensis, on the structure and 

 development of, 344. 



Perry (S. J.), admitted, 362. 



Phronima, on the anatomy and habits of 

 the genus, 154. 



Planimeter, on the employment of a, to 

 obtain mean values from the traces of 

 continuously self-recording meteoro- 

 logical instruments, 435. 



Poison of Naja tripudians and other In- 

 dian venomous snakes, on the nature 

 and physiological action of the, 68. 



Polarized light, on the combinations of 

 colour by means of, 354. 



Potassium and sodium, on the absorption- 

 spectra of, at low temperatures, 362. 



Power (H.) and Brunton (T. L.) on the 

 diuretic action of Digitalis, 420. 



Presentation of the medals, 10. 



Presents, list of, 48, 148, 223, 258, 329, 

 473. 



President's Address, 2. 



Prestwich (J.), tables of temperatures of 

 the sea at various depths below the 

 surface, taken between 1749 and 1868 ; 

 collated and reduced, with notes and 

 sections, 462. 



Prime, on the number of figures in the 

 reciprocal of every, between 20,000 and 

 30,000, 384. 



number below 20,000, on the num- 

 ber of figures in the period of the reci- 

 procal of every, 200. 



, given the number of figures 



(not exceeding 100) in the reciprocal of 

 a, to determine the prime itself, 381. 



Pyridine and chinoline bases, on the phy- 

 siological action of the, 432. 



Rainfall, on the periodicity of, 286. 



