INDEX, 



523 



Matthiessen (A.), researches into the 

 chemical constitution of narcotine,"and 

 of its products of decomposition : Part 

 HI., 337 ; Part IT., 340. 



■ and Wright (C. E. A.), researches 



into the chemical constitution of the 

 opium bases : Part I. On the action of 

 hydrochloric acid on morphia, 455 ; II. 

 On the action of hydrochloric acid on 

 codeia, 460. 



Melbourne telescope, notice of the, 140. 



Meteorite, preliminary notice on the 

 mineral constituents of the Breiten- 

 bach, 370. 



Meteorites, on the phenomena of light, 

 heat, and sound accompanying the fall 

 of, 155. 



Meteorological department of Board of 



Trade, notice of reorganization of, 135. 

 Methylic mustard-oil, 70. 

 Microscope, binocular spectrum, on a new 



arrangement of, 443. 

 Miller (W. A.), note on a self- registering 



thermometer adapted to deep-sea 



soundings, 482. 

 Mivart (St. Or.) admitted, 453. 

 Moon, on the radiation of heat from, 436. 

 Morphia, on the action of hydrochloric 



acid on, 455. 

 Moseley (Bev. H.) on the mechanical 



possibility of the descent of glaciers by 



their weight only, 202. 

 Motor phenomena ascribed to the action 



of galvanic currents, 380. 

 Munich, dip observations at, 284. 

 Murray (Capt. S.), observations of the 



total solar eclipse of August 18, 1868, 



127. 



Mustard-oil, ethylic, 69 ; methylic, 70 ; 



amylic, 70; tolylic,70; benzylic, 71. 

 , , transformations of, and sul- 



phocyanide of ethyl, 269. 



Narcotine, researches into the chemical 

 constitution of : III., 337 ; IV., 340 ; 

 action of hyclriodic acid on, 337 ; of 

 hydrochloric acid, 338 ; action of water 

 on, 340. 



Nebula?, southern, additional observations 

 of, 303. 



and clusters observed at Bangalore, 



second list of, 58. 



Nitrite of arnyl, action of sunlight on, 94 ; 

 production of skyblue by decomposi- 

 tion of, 97. 



Norclenskibld (A. E.), further particulars 

 of the Swedish arctic expedition, in 

 a letter addressed to the President, 91, 

 104. 



, account of explorations by the 



Swedish arctic expedition at the close 

 of the season 1868, 129. 



Norris (B.) on the laws and principles 



concerned hi the aggregation of blood- 

 corpuscles both within and without the 



vessels, 429. 

 North Greenland fossil plants, notice of, 



142 ; description of, 329. 

 Nuclei, on the action of solid, in liberating 



vapour from boiling liquids, 240. 

 Obituary notices of deceased Fellows : — 



Michael Para day, i. 



Sir David Brewster, lxix. 



Charles Giles Bridle Daubeny, lxxiv. 



Julius Pliicker, lxxxi. 



Jean Bernard Leon Poucault, lxxxii. 



Antoine Francois Jean Claudet, lxxxv. 



Charles James Beverly, lxxxvii. 

 Ocean temperature, observations of, 136. 

 Opals, on some optical phenomena of, 



448. 



Opium bases, researches into the che- 

 mical constitution of : I., 455 ; II., 

 460. 



Organo-metalhc bodies, on a new class of, 

 containing sodium, 286. 



Oviparous vertebrata, on the structure of 

 the red blood-corpuscle of, 346. 



Owen (E.), description of the cavern of 

 Bruniquel and its organic contents : 

 Part II. Equine remains, 201. 



, on fossil teeth of equines from Cen- 

 tral and Southern America, referable to 

 Equus conversidens, JEqiius taw, and 

 JEquus arcidens, 267. 



, on the molar teeth, lower jaw, 



of Macrauchenia jpatachonica 3 Ow., 

 454. 



, on remains of a large extinct lama 



{Palauchenia magna, Ow.) from qua- 

 ternary deposits in the Yalley of Mex- 

 ico, 405. 



Palauchenia magna, a large extinct lama, 



on remains of, 405. 

 PaUadium, on the relation of hydrogen to, 



212. 



, loss of occluding power of, in alloys, 



504. 



, platinum and hydrogenium, 502 ; 



gold and hydrogenium, 503 ; silver and 

 hydrogenium, 504 ; nickel and hydro- 

 genium, 505. 



Paris, dip observations at, 285. 



Parker (W.K\) on the structure and deve- 

 lopment of the skull of the common 

 fowl ( Gallus domesticus), 277. 



Parheria, an arenaceous foraminifer, de- 

 scription of, 400. 



Pasteur (L.) elected foreign member, 40. 



Pendulum governor for uniform motion, 

 on a, 468. 



observations, account of experiments 



for determining the true vacuum- and 

 temperature-corrections to, 488. 



Pcrrins (Capt. C. G.) 3 observations of the 



