558 



INDEX. 



Carpenter (W. B.), scientific exploration 



of the deep sea, 397. 

 Carpenter (W. L.), summary of results of 



observations on samples of sea-water 



made on board H.M.S. ' Porcupine,' 



481. 



Catalogue of scientific papers, notice of 

 publication of vol. iii. and of Index 

 rerum, 102. 



Cay ley (A.) on abstract geometry, 122. 



, a ninth memoir on qualities, 313. 



Cerebral hemispheres, on the structure of 

 the, 51. 



Circulation, effect of alcohol on the, 369. 

 Cladonic acid, 227. 



Cleland (J.), an inquiry into the variations 

 of the human skull, particularly in the 

 antero-posterior direction, 35. 



Climate, influence of tropical, on the pulse, 

 525 ; on the temperature of the human 

 body, 526. 



, on some of the more important 



physiological changes induced in the 

 human economy by change of, 513 ; in- 

 fluence of tropical, on respiration, 514. 



Chambers (C.) admitted, 120. 



Chemical activity of nitrates, 348. 



Chest, on a group of varieties of the mus- 

 cles of the, 1. 



Chlorocodide, action of hydrochloric acid 

 on, 85, 122 ; action of water on the hy- 

 drochlorate of, 87, 122. 



Codeia, action of hydrochloric acid on, 

 83. 



Coimbra, monthly magnetic determina- 

 tions made at, 185. 



Continuous beams, on the theory of, 176 ; 

 remarks on Mr. Heppel's theory of, 

 178. 



Copley medal awarded to H. Y. Regnault, 

 107. 



Council, list of, 99, 113. 



Croonian Lecture, on the results of the 



method of investigating the nervous 



system, &c, 339. 

 Curves, on the mechanical description of, 



72. 



Cyanetholine, 493. 



Cyanogen, action of, on anthranilic acid, 

 89, 99. 



Cyan uric ethers, on compounds isomeric 

 with, 493. 



Cycles of temperature in the earth's sur- 

 face-crust, 311. 



Davis (J. E.) on deep-sea thermometers, 

 347. 



Davy medal fund, notice of, 112. 



Dawson (J. W.) admitted, 321. 



, Bakerian Lecture, on the pre-car- 



boniferous floras of North-eastern Ame- 

 rica, with especial reference to that of 

 the Erian (Devonian) period, 333. 



Deep-sea bottom, analyses of samples of, 

 490. 



Deep sea, on the rhizopodal fauna of, 59. 

 , preliminary report on the scientific 



exploration of, 98, 99 ; notice of, 106 ; 



report, 397. 



, physics and chemistry of the, 453. 



thermometers, on, 347. 



Delaunay (C. E.) (For. Mem.) admitted, 



196. 



Derrick for dredging purposes, 404. 



De Souza (J. A.), monthly magnetic de- 

 terminations, from December 1866 to 

 May 1869 inclusive, made at the Uni- 

 versity of Coimbra, 185. 



Diethyiic amido-cyanurate, 497. 



Digitaline, physiological action of, on the 

 irog, 46. 



Dip, results of monthly observations of, at 



Kew Observatory, 231. 

 Discoid shells, on the mode of growth of, 



529. 



Donegal, granites of, compared with those 

 of Scotland, 312. 



Dredging-expedition in H.M.S. ' Porcu- 

 pine,' 397 ; equipment, 403; first cruise, 

 416; second cruise, 423; third cruise, 

 434 ; physics and chemistry of, 453 ; 

 observations on samples of sea-water, 

 481; analyses of sea- water, 488; ana- 

 lvses of samples of the deep-sea bottom, 

 490. 



Duncan (P. M.) and Jenkins (H. M.) on 

 Palceocoryne, a genus of the tubularine 

 hydrozoa from the Carboniferous for- 

 mation, 42. 



Electroscopic experiments, on a cause ot 

 error in, 330. 



Erbia, and some other earths, note on the 

 spectra of, 546, 551. 



Erian period, on the precarboniferous 

 flora of the, 333. 



Esson (W.) admitted, 94. 



Ethylbenzol, action of bromine on, 123. 



Et hylic diamido-cyanurate, 498- 



Euler's constant, fourth and concluding 

 paper on the calculation of the nume- 

 rical value of, 49. 



Evernic acid, 225. 



Fellows deceased, list of, 101 ; elected, 

 102; number of, 113. 



Financial statement, 114. 



Flexure in beams, on the cause and theo- 

 retic value of the resistance of, 345. 



Flourens (M.-J. P.), obituary notice of, 

 xxvii. 



Fluoride of silver, on, 157. 



Foot and hand, on the difference be- 

 tween, as shown by their flexor tendons, 

 359. 



