INDEX. 



597 



Microphytes, on the influence of liquor ■ 

 potassffi and an elevated temperature ! 

 on the origin and growth of, 454. 



Minerals, on two new vanadium, 109. 



Mirror, observations with a revolving, 73. 



MoUusca of the ' Valorous ' cruise, 1875, 

 187. 



Monte Video, report to the Hydrographer 

 of the Admiralty on the voyage of the 

 ' Challenger' from the Falkland Islands 

 to, 92. 



Moseley (H. N.) on the structure of the 

 Stylasteridre, a group of stony corals 

 which, like the MilleporidEe, are Hy- 

 droids and not Anthozoans, 93. 



Moss (R. J.) on the condensation of 

 vapour of mercury in the Sprengel 

 vacuum, 22. 



and Stoney (Gr. J.) on Crookes's 



force, 553. 



Motor nerves, on the modification of the 

 excitability of, produced by injury, 8. 



Mucus, on certain unusual coagulation- 

 appearances found in, and other albu- 

 minoid fluids, 140. 



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

 Volta's experiment of the electricity 

 produced by the contact and separation 

 of different metals, 250. 



Muscle, on the electrometric properties 

 of, 435. 



Muscular tissues, on lymphatics and their 



origin in, 550. 

 Mycelium, on the, of small-pox in sheep, 



259. 



Nares (G-. S.), admitted, 303. 



Niven (W. D.) on the calculation of the 

 trajectories of shot, 18. 



Non-conductors, on contact-electricity 

 between, 169. 



Norman (A. M.) on the Crustacea, Tuni- 

 cata, Polyzoa, Echinodermata, Actino- 

 zoa, Foraminifera, Polycystina, and 

 Spongida of the ' Valorous ' cruise, 

 1875, 202. 



Obituary notices of Fellows deceased : — 

 George Poulett Scrope, i. 

 Peter Andreas Hansen, v. 

 Sir Charles Lyell, xi. 

 Dr. Neil Arnott, xiv. 



Anders Jonas Angstrom, xviii. 



Jean Louis Eodolph Agassiz, xxii. 

 Octave, on the Hindoo division of the, 



with some additions to the theory of 



the higher orders, 540. 

 Operations, on the calculus of chemical,83. 

 Organisms, on the development of, in 



organic infusions, 503. 

 Organo-boron compounds, 165. 



Page (F. J. M.) and Sanderson (J. Bnr- 

 cTon) on the mechanical effects and on 



the electrical disturbance consequent on 

 excitation of the leaf of BioncBa musci- 

 imla, 411. 



Parker (W. K.) on the structure and 



development of the skull in the L^ro- 



delous Amphibia : Part L, 333. 

 Particles, on the transport of solid and 



liquid, in sewer gases, 542. 

 Pebbles and minerals dredged during the 



' Valorous ' cruise, 1875, 229. 

 Perry (S. J.), magnetic observations made 



at Stonvhurst College observatory from 



April 1870 to March 1876, 314. 

 ■ on a simultaneous disturbance of 



the barometer and of the magnetic 



needle, 90. 

 Phenomena connected with vision, on 



some, 487. 

 Phosphorus pentafluoride, 122. 

 Photographic spectra of stars, note on 



the, 445. 



Phj'sical investigations on board the 

 ' Valorous ' in August 1875, report on 

 the, 230. 



Physico-chemical theory of fermentation, 

 researches illustrative of the, and of the 

 couditions favoui'ing archebiosis in 

 previously boiled fluids : No. I., 149. 



Physiological action, on the, of the bark 

 of Eryfhrophlcum guinen^e, 172. 



Picrorocellin, 60. 



Piezometer, on the use of the, in deep-sea 

 sounding, 161. 



Plants, on the organization of the fossil, 

 of the Coal-measures, 68. 



Polarization of light, on the, by crystals 

 of iodine, 51. 



of light, on the rotation of the plane 



of, bv reflection from the pole of a mag- 

 net, 447. 



Presentation of the medals, 356. 



Presents, list of, 86, 272, 385, 458, 510, 

 570. 



President, letter to the, from the Scientific 

 Club, Vienna, 546. 



President's Address, 339. 



Pulmonary veins and vena cava, on inde- 

 pendent pulsation of the, 174. 



Pye (W.) and Brunt on (T. L.) on the 

 physiological action of the bark of Ery- 

 throphlcwn guinense (casca, cassa, or 

 sassy bark), 172. 



Quartic, addition on the bicircular, 655. 



Eadiation, on repulsion resulting from : 



influence of the residual gas, 136. 

 Eadiometer, experimental contributions 



to the theory of the, 304. 

 Eayleigh (Lord) on the application of the 



principle of reciprocity to acoustics, 



118. 



Eeciprocity, on the application of the 

 principle of, to acoustics, 1 18. 



