5S0 



INDEX. 



462 ; Nuttallite, 464 ; granular 

 albite, 484 ; Indianite, 486. 



Mineral waters, on the state in which 

 arsenic exists in the deposit from, 

 465. 



Mirrors, remarks on the process of 

 grinding large, 523. 



Molybdic acid, on the estimation of, 

 75. 



Monrolite, analysis of, 458. 



Myricine, investigations on, 244. 



Nepenthes, on the chemical composi- 

 tion of the fluid in the ascidia of, 

 192. 



Newton's Principia, on Hegel's criti- 

 cism of, 392. 



Nile, on the sources of the, 99. 



Nitrobenzamide, on the action of the 

 hydrosulphate of ammonia upon, 

 236. 



Nitrogen gas, on the preparation of, 

 317. 



Noctiluca miliaris, observations and 

 experiments on, 401. 



Numbers, analytical researches con- 

 cerning, 36. 



Nutrition, on the proper balance of 

 food in, 127. 



Nuttallite, analysis of, and observa- 

 tions on, 464. 



Oil of turpentine and water, on the 

 combinations of, 474 ; on the action 

 of phosphoric acid on the hydrates 

 of, 477. 



Osmium, on some compounds of, 397. 



Palmitic acid from the saponification 

 of myricine, observations on the, 

 250. 



Paton (J.) on the Old Southend Pier- 

 head, and on the nature and ravages 

 of the Teredo navalis,and the means 

 adopted for preventing its attacks, 

 526. 



Peas and pea-straw, examination of 

 the inorganic constituents of, 171. 



Phillips (Reuben) on electricity and 

 steam, 490. 



Phosphorescence, vital, on the phse- 

 nomena of, 401. 



Phosphoric acid, on the qualitative 

 and quantitative determination of, 

 545. 



Phosphorus, on the compounds of the 

 halogens with, 345. 



Photography, on the theory of the 

 principal phaenomena of, 374. 



Plants, on the inorganic constituents 

 of, 1 ; on the amount of silica con- 

 tained in some, 181 ; on the ana- 

 lysis of, by incineration, 309. 



Platina, contributions to the chemistry 

 of the metals of, 396. 



Poleck (M.) on the inorganic consti- 

 tuents of the white and yolk of 

 hen's eggs, 281. 



Precipitates, on a simple apparatus for 

 washing, 96. 



Pring (Dr. J. H.) on the Noctiluca 

 miliaris, the animalcular source of 

 the phosphorescence of the British 

 seas, 401. 



Pringle (W.) on an easy mode of mea- 

 suring solar objects, 467. 



Provostaye (M. F. de la) on the rota- 

 tion of the plane of polarization of 

 heat by magnetism, 48 1 . 



Pyro-alizaric acid, on the preparation 

 and composition of, 215. 



Quaternions, a new system of imagi- 

 naries in algebra, 133, 200. 



Railway bridges, on a differential 

 equation relating to the breaking 

 of, 230. 



Rain, on the production of lightning 

 by, 161, 392. 



Rape-seed and rape-straw, examina- 

 tion of the inorganic constituents 

 of, 177. 



Reboulleau (M.) on blue arseniate of 

 copper, 310. 



Reflex zenith telescope, description of 

 the, 294. 



Reynoso (M. A.) on the detection of 

 iodine and bromine, 156. 



Rose (M. H.) on the estimation of 

 molybdic acid, 75 ; on the inorganic 

 constituents of organic bodies, 1, 

 171, 271. 



Rosse (Lord) on the process of grind- 

 ing large mirrors, 523. 



Roval Astronomical Society, proceed- 

 ings of the, 294, 386, 519. 



Roval Society, proceedings of the, 64, 

 147, 231,528. 



Rubiacic acid and salts, on the prepa- 

 ration and composition of, 216. 



Rubiacine, on the properties and com- 

 position of, 215. 



Rubian, on the properties and compo- 

 sition of, 218. 



Ruthenium, on some compounds of, 

 397. 



