576 



INDEX. 



Life, on protoplasmic, 468 ; action of heat 

 on, 472. 



Light, suppression of chemical action of, 



during an eclipse, 513. 

 Linear differential equations, on : No. III., 



14; No. IV., 281; No. V., 526. 

 Liquid, on the uniform flow of a, 286. 

 Liquids, on the thermo-electric action of, 



324. 



Loewy (B.), resume of two papers on sun- 

 spots : — " On the form of the sun-spot 

 curve," by Prof. Wolf; and "On the 

 connexion of sun-spots with planetary 

 configuration," by M. Fritz, 392. 



Lowe (Right Hon. R.) elected, 481 ; ad- 

 mitted, 494. 



Luminous cloud in a Geissler's tube, on 

 the nature of, 239. 



Madreporaria, remarks on the persistence 



of palaeozoic types of, 450. 

 Magnetic observations made during a 



voyage to the coasts of the Arctic Sea, 



1870, 361. 



Magnetometers, disturbances shown by 

 the horizontal and vertical force, at 

 Kew, 524. 



Mance (H.), method of measuring the re- 

 sistance of a conductor or of a battery, 

 or of a telegraph-line influenced by 

 unknown earth-currents, from a single 

 deflection of a galvanometer of unknown 

 resistance, 248. 



, measurement of the internal resist- 

 ance of a multiple battery by adjusting 

 the galvanometer to zero, 252. 



Marcet (W.), an experimental inquiry into 

 the constitution of blood, and the nutri- 

 tion of muscular tissue, 465. 



Maskelyne (N. S.) on the mineral consti- 

 tuents of meteorites, 266. 



Matthiessen (A.) and Burnside (W.), re- 

 searches into the chemical constitution 

 of the opium bases : Part IV. On the 

 action of chloride of zinc on codeia, 71, 

 94. 



Mechanism of respiration, remarks on, 

 486. 



Mediterranean, temperature of the, 531. 



■ water, temperature and composition 



of, 193. 



Metals, on the thermo-electric action of, 

 324. 



Meteorites, on the mineral constituents of, 

 266. 



Miller (W. A.), notice of decease of, 114 ; 



obituary notice of, xix. 

 Miller (W. H.), Royal medal awarded to, 



124 ; notice of his researches, 125. 

 Molybdates of lead, on the, 451. 

 Moncrieff (A.) admitted, 494. 

 Moon, on the radiation of heat from the, 9. 



Moseley (H.) on the uniform flow of a 

 liquid, 286. 



Muscle, behaviour of, under action of in- 

 verse and direct currents, 24. 



Muscular tissue, experimental inquiry into 

 the nutrition of, 465. 



Mussoorie, actinometrical observations 

 made at, 225; spectrum observations 

 made at, 2. 



Newton (A.) admitted, 246. 



Nitrogen, further experiments on the effect 



of diet and exercise on the elimination 



of, 349. 



Nitrous oxide, on the existence and for- 

 mation of salts of, 425. 



Noble (A.) admitted, 94. 



Norris (R.) on the physical principles 

 concerned in the passage of blood-cor- 

 puscles through the walls of the vessels, 

 556. 



North-German polar expedition, notice 

 of, 116. 



Nototherium, 494. 



Obituary notices of deceased Fellows : — 



James David Forbes, i. 



Johann Evangelista Purkinje, ix. 



Sir James Clarke, xiii. 



William Allen Miller, xix. 



John Thomas Graves, xxvii. 

 Ocean, on the undercurrent theory of, as 



propounded by recent explorers, 528. 

 Oceanic circulation, general, 213. 

 Olefines, on the production of the, from 



paraffin, 370. 

 Opium alkaloids, contributions to the 



history of : Part I., 371 ; Part II., 504. 

 bases, researches into the constitution 



of the: Part IV, 71, 94. 

 Orcin, contributions to the history of : 



No. I., 410. 

 Orcins, nitro-substitution compounds of 



the, 410. 



Orion, observations on the nebula in, 19. 



Osborn (S.) admitted, 94. 



Owen (R.) on the fossil mammals of 

 Australia : Part IV. Dentition and 

 mandible of Thylacoleo carnifex, with 

 remarks on the argument for its herbi- 

 vority, 95; PartV. Genus Nototherium, 

 494. 



Pangenesis, experiments in, 393. 



Paraffin, preliminary notice on the pro- 

 duction of the olefines from, 370. 



Parker (W. K.) on the structure and de- 

 velopment of the skull of the common 

 frog (liana temporaria), 246. 



Parkes (E. A.), further experiments on the 

 effect of diet and exercise on the elimi- 

 nation of nitrogen, 349, 



