INDEX. 



A. B. on the Nature of Water, 153 



Acid, carbonic, its action on urine, 132 

 —Sometimes useful in calculous 

 complaints, 132 



Acids, mucous, comparative examina- 

 tion of, 14 



Aqid, muriatic, elements of, 31 — See 

 the next article — ^Its affinity to different 

 bodies, 369 



Acid, oximuriatic, its nature and com- 

 binations, 31, 369 — Observations and 

 experiments on, 132, 294 — Forma- 

 tion of, 194, 297 — Mr. Davy's opi- 

 nions important, 133, 194— Facts 

 considered as most favourable by Mr. 

 Davy, not conclusive, 133 305— 

 Question, whethef ^Vater be essen- 

 tial to the constitution of muriatic 

 acid gas? 138, 198, S08— Proof of 

 the existence of oxigen in oximu- 

 riatic acid not easily obtained, 141— 

 Evidence that it does so exist, 148— 

 A source of ambiguity answered, 142 

 •—Carbonic oxide and oximuriatic acid 

 gasses not changed by the electric 

 spark, though they are by standing 

 together, 143 — The ambiguity ac- 

 counted for by the common tlieory, 

 but not by Mr. Davy's, 145— Source 

 of Mr. Davy's mistake, 295— Sin- 

 gular phenomenon attending the ex- 

 periments, 150, 309— General ob- 

 servations, 151— Defence of Mr. 

 Davy's theory, 193 — Examination of 

 ^Ir. Murray'*s experiments, 199, 304 

 —Review of Mr. Dahon's opinion, 

 205— 5'ce Metalloids ; and page 310 



Agents, chemical, classification of, 59 

 — Advantages of this plan, 62 



Air-pump, a cheap and simple con- 

 struction of one, 249 



Airthrey, gray copper ore of, described, 

 27— Analysis of, 28— Component 

 parts,30— The analysis compared with 

 several analyses of Klaproth, 30. 



Alkalis, earths, and metallic bases, 

 Vol. XXVIJl. 



source of the properties that distill* 

 guish them, 248 



Alkalis, their action on common resiJis, 

 S4G 



Alkaline metalloids, see Metalloids 



Ammoniacum, gum, analy.sis of, 347— 

 Properties of the gum, 348 j of tha 

 resin, 349— Component parts, 350 



Amphibole of Cape de Gattes, described, 

 75 — Compared with struhlstein, 7^6 ^ 

 —Component parts of each, 77 



Analysis of a black sand from the ilvei' 

 Don, 19 — ^25 — Of a gray copper ore 

 from Airthrey, 27— Of the amphi- 

 bole of Cape de Gattes, 75— Of fluor 

 spar, 157 — Of a soil containing free 

 muriatic acid, and muriate of soda, 

 lime, alumine, magnesia, and man- 

 gariese, 180--.Of a new specieS of 

 urinary calculus, 222-^Of gum re- 

 sins, 228, 344— Of gamboge, 228— 

 Of euph^rbium, 232— Of myrrli, 

 234 — Of olibanum, 344— Of. gum- 

 ammonidcum, 347 



Animals, luminous, genera of, 41— 

 description of the organs for pro- 

 ducing light, ibid — The fire fly, ibid 

 —The glow-worm, 42, 48— The 

 springing beetle, 43 — The lantern 

 fly, and pausus spherocerus, 44— 

 The light not regulated by any visi- 

 ble mechanism, but by some change 

 in the luminous matter, unconnected 

 with nervous energy, 45— In other 

 animals than the above, the luminous 

 matter is fluid, 45-^Theories of ani- 

 mal light, 47— Experiments, 48— «. 

 General deductions, 50— Spallanza- 

 ni^s experiments contrary to his 

 theory, 51— Conclusions, 52— -The 

 luminous appearance of the sea pro- 

 duced by these animals, 33 



" Annals of the Observatory of the 

 Academy at Turin,'' a new publica* 

 tion, containing an extensive mete- 

 orol( gical table, &c. 382, 



Arborizations, metallic, how far infiu- 

 C c encel 



