INDEX. 



485 



Polarizable nature of heat, 97. 



Potash, borates of, 317 ; pectate of, 472 ; 

 potash and tungstate of potash, 395. 



Potassium, iodide of, iodine, and the es- 

 sential oil of cinnamon, a new com- 

 pound of, 113. 



Potassium, sulphocyanide of, as a test 

 for strychnia, 470. 



Potassium and sodium, arithmetical 

 analysis of mixed salts of, 132. 



Potassium and zinc, new double salt of, 

 393. 



Potter (R.) on the primary and second- 

 ary rainbows, 9. 



Powell (Rev. B.) on the dispersion of 

 light, 222. 



Quetelet, (M.) on the shooting stars in 

 August 1838, 252. 



Quicksilver of San Onofre, in Mexico, 

 386. 



Rainbows, on the primary and second- 

 ary, 9. 



Rees (Dr. G. O.) on the proportion of 

 animal and earthy matter in human 

 bones, 155 ; analysis of the liquor 

 Amnii, 395 ; analysis of serum of 

 blood from a diabetic patient, 395. 



Refractions, astronomical, on, 147. 



Refrangibility of heat, 180. 



Regnault (M.) on metallic pectates, 397; 

 analyses of pectic acid, 471 ; on the 

 pectates of potash, soda and ammo- 

 nia, 472, 



Reptile, new anomalous, 479. 



Resins, analysis of the, 474. 



Respiration, experiments on, 463. 



Richardson (T.) on the composition of 

 coal, 121. 



Richemont (M. De), reagent for nitric 

 acid and nitrogen, 393. 



Rigg (R.) on the influence of nitrogen 

 on the growth of plants, 223 ; on the 

 evolution of nitrogen during the 

 growth of plants, 455. 



Rosemary, oil of, its composition, 437. 



Royal Geological Society of Cornwall, 

 390. 



Royal Society, 146, 222, 454. 



Salts, soluble, instructions for the quali- 

 tative analysis of, 202 ; on the con- 

 stitution of, 219. 



Schcenbein (Prof.) on Fechner's views 

 of the theory of galvanism, 161 ; on 

 the cause of the peculiar condition of 

 iron, 257. 



Scientific Memoirs, notice respecting, 

 310. 



Sedgwick (Prof.) on the English strati- 



fied rocks inferior to the old red sand- 

 stone, 299. 



Shell-lac, specific inductive capacity of, 

 415. 



Shells, turbinated and discoid, on the 

 geometrical forms of, 464. 



Smee (A.) on the state of animal mat- 

 ter found in fossils, 231. 



Societies, Learned; — Royal Society, 146, 

 222, 454 ; Geological Society, 225, 

 299, 386 ; Royal Geological Society 

 of Cornwall, 390; British Association 

 for the Advancement of Science, 224. 



Soda, formate of, as a reducing substance 

 for arsenic, 394 ; pectate of, 472. 



Sodium and potassium, arithmetical 

 analysis of mixed salts of, 132. 



Spearmint, oil of, its composition, 444. 



Spirolinites in chalk and chalk-flints, 

 386. 



Spermaceti, specific inductive capacity 

 of, 420. 



Stars, shooting, on, 254. 



Stearopten of turpentine, 396. 



Stokes (C.) on some species of Orthoce- 

 rata, 388. 



Strychnia, sulphocyanide of potassium 

 as a test for, 470. 



Succisterin, on, 238. 



Suerman (Dr.) on the specific heats of 

 the gases, 261, 339. 



Sugars, M. Pehgot on, 237. 



Sulphate of lime and water, new com- 

 pound of, 325. 



Sulphur, specific inductive capacity of, 

 420. 



Sulphurous acid, on the reaction of the 

 essential oils with, 28; reagent for its 

 detection in thehydrochloric acid, 392. 



Suppuration, researches on, 193. 



Swiss Association for the advancement 

 of Natural Science, 233. 



Sylvester, (Prof.) on the motion and rest 

 of fluids, 449; on an extension of Sir 

 J. Wilson's theorem to all numbers 

 whatever, 454. 



Synaptasin, M. Robiquet on, 310. 



Syria, Northern, account of a line of 

 levels across, 146. 



Taylor (J.) on the quicksilver of Mex- 

 ico, 386; on the obsidian from Mexico, 

 387. 



Teeth, on the structure of the, 454. 



Thermometer, Coggan's self-registering, 

 456. 



Thomson (W. T.) account of a line of 

 levels across Northern Syria, 146. 



Tides, deduction of the laws of, 457. 



