INDEX. 



4.53 



Engelbardt (M.) ou the constitution 



of hydi'obenzamicle, 429. 

 Equation, a proof that every, has as 



many roots as it has dimensions, 



112; remarks on, 176, 283. 

 Equations of the fifth degree, on the 



theory of, .356. 

 Equivalents of the elements, on the, 



423. 

 Ernian (Prof. A.) on the structure, 



melting, and crystallization of ice, 



405. 

 Ethyle-compounds, on some new, 225. 

 Ethylene, on the action of bibromide 



of, upon aniline, 66. 

 Excretine, observations on, 145. 

 Eye, on the adaptation of the human, 



to varying distances, 224. 

 Falconer (Dr. H.) on the Grotta di 



Maccagnone, 442. 

 Faraday (Prof. M.) on regelation, and 



on the conservation of force, 162. 

 Fats, on the action of bile upon, 145. 

 Felspar of the Canton granite, on, 



258. 

 Field (F.) on Guayacanite, a new mi- 

 neral species, 232. 

 Fluid, on the central motion of an 



elastic, 21. 

 Fluids, on the thermal effects of com- 

 pressing, 364. 

 Forbes (Prof. J. D.) on ice and glaciers, 



197; on certain vibrations produced 



by electricity, 359. 

 Force, on the conservation of, 166. 

 Foucault (M. L.) outhe methods used 



to ascertain the figure of optical 



surfaces, 151. 

 Frankland (Dr. E.) on sodium-ethyle 



and potassium-ethyle, 289. 

 Frapoli (M.) on the conversion of 



aldehyde into acetal, 2/6. 

 Gages (A.) on the study of some me- 



tamorpbic rocks, 1 69. 

 Galesaurus planiceps, description of, 



378. 

 Gases, on molecular motion in, 81 ; 



ou the phospliorescence of, by the 



action of electricity, 383. 

 Gassiot (J. P.) on the stratification 



of electrical discharges, 432. 

 Geological Society, proceediiigs of the, 



72, 147, 229, 305, 373, 442. 

 Geology, on some points in chemical, 



148. 

 Gcuther (M.) on sodium-alcohol, 427. 



Gilbert (Dr. J. H.) on the composi- 

 tion of animals slaughtered as hu- 

 man food, 291. 



Glaciers, on the theory of the veined 

 structure of, 198, 263. 



Gladstone (Dr. J. H.) on the influ- 

 ence of temperature on the refrac- 

 tion of light, 222 ; on the periods 

 and coloiu's of luminous meteors,386 . 



Glycol, researches on, 427. 



Glycosine, on the constitution of, 211 . 



Glyo.xal, on the action of ammonia on, 

 211. 



Glyoxaline, on the constitution of, 21 1 . 



Gold-field of Ballaarat, on the, 149. 



Gore (G.) on the rotation of me- 

 tallic spheres by electricity, 107 ; 

 on an apparatus for examining the 

 electrical relations of unequally 

 heated mercury and fluid alloys in 

 conducting liquids, 398. 



Griess (P.) on new nitrogenous de- 

 rivatives of the phenyle- and ben- 

 zoyle-series, 3/1. 



Grove (W. R.) on the reflexion and 

 inflexion of light by incandescent 

 surfaces, 177- 



Guayacanite, a new mineral species, 

 on, 232. 



Gunpowder, on the nature of the 

 action of fired, 366. 



Haidinger's coloured houppes, obser- 

 vations on, 323. 



Harnitzki (M.) on the action of phos- 

 gene gas on aldehyde, 430. 



Harrison (J. Park) on lunar influence 

 on temperature as connected with 

 serenity of the sky, 153. 



Haughton (Rev. Prof. S.) on some 

 rocks and minerals from Central 

 India, 16 ; notes on mineralogy, 

 258 ; on the thickness of the earth's 

 crust, 397. 



Hearder (J. N.) on the Atlantic cable, 

 27 ; on a new form of telegraph 

 cable intended to reduce the ett'eets 

 of inductive action, 331. 



Heat, on the mechanical theory 

 of, 81 ; on a mathematical theory 

 of, 202 ; ou the distribution of, in 

 the diffraction-spectrum, 247- 



lleddle (Dr.) ou the pseudomorphic 



minerals found in Scotland, 12. 

 llcnnessy (Prof. 11.) on tirrestriul 

 diiiialc as inlluciiccd by the distri- 

 buCioii of land and water, 181. 



