436 INDEX. 
Atmofpheric refra&tion, phenomena in, 216, 232, 427° 
Aurum problematicum, experiments on, by Gmelin, 200. ‘< 
Baltic fea, Mr. Otto’s phyfical obfervations on, 376. 
Bark of alder, or oak, not fubftitutes for galls in dyeing cotton fet ss, 
60. 
Barley, Mr. Cruickthank’s experiments 6n, 365. 
Barometer, account of Mr. Keir’s improved, 65. 
Baudin, Profefor, account of the fiery meteor feen by, 225. 
Beans, divided in two and fown, produce plants, 187. 
Belles Lettres, prize queftion.in, 100. 
Berchtold, Count, account of his work on the plague, 2 956. 
Berlin Academy, prize queftions by the, 98. 
Berlin Society of Searchers into Nature, prize queftion by, 196. 
Biographical memoirs of John Targioni Tozetti, 185. 
of Saverio Manetti, 186. 
Bird, a new one from Java, 321. 
Birds, a tett of the degrees of their inftin&, 108. 
a clailification of, executed by Lacepede, 202. 
Bifmuth mixed with tin and lead, very fufible, 375. 
Bleaching with the oxygenated muriatic acid, 293. 
Blumenbach, Profeffor, on the rattle-fnake, 251. 
Bolides, or fire-balls, Dr. Chladni on, 2, 225, 338 
Bones of an animal not now exifting alive, 107. 
Books, to whiten and clean, 28, 30. 
- account of new, 185, 319. 
—-— an old one containing a kind of prediGtion, 208. 
Botany, intelligence relative to, 109, 187, 321, 322, 323. 
Brafs, to feparate the component parts of, 201. 
Bricks, to make, that will float in water, 180. 
Brugnatelli’s procefs for obtaining lemon-juice, 146. 
Bruguiere's travels in Greece, Turkey, Perfia, &c. 312. 
Cairo, inteHigence refpefting, 414, 424. 
Canis Graius Hibernicus, account of, 168. 
Carbonic acid gas, the proportions of oxygen and carbon in, 3406 
Carradori on the phofphorefcence of the luciole, 77. 
Cats, experiments or the light feen in the eyes of, 215. 
Cavendifh’s, Mr. experiments on the earth's denfity, 213. 
Chaptai on the ufe of oxyds of iron in dyeing, 55: 
Charcoal, on the properties of, as a non-conduétor of heat, 182. 
-————- the quantity formerly ufed in the iron manufa@tory, 348. 
Chemiftry, the prefent ftate of, in Germany, 328. 
Children, M. Herbolt on the apparent death of new-born, 111. 
* . Chladni, Profeffor, on fire-balls, fhooting ftars, &c. 2, 225, 338. 
— a new mufical inftrument invented by, 215, 
Chrome, its oxyd and acid, on the ufes of, 74. 
experiments on, 199. =. 
Cinchona, a {ubititute recommended for, 186. 
Clonet's proces for preparing caft fteel, 219. . 
Ceindet, Dr. on animal fat, 121, 
Colouring 
