43 6 INDEX. 



Blumenlach, on negroes, page 141. 



Bolides or fire-balls, Fulda's obfervations on, 66. 



Bolton's, Captain, machine for drawing fhip bolts, 189 1 



Bolls, a machine for drawing in and out of (hips, 189. 



Bones, Turkifh method of fetting fractured, 127. 



Books, account of new, 99, 319, 321, 323. 



Botany, an ingenious method of multiplying the Fritillaria regia, L. 



433- 

 Britijh Miner alogical Society, inftitutionof the, 318. 

 Bro<w?i's procefs for preparing manure, 32. 

 Brugxuere and Olivier, travels in Turkey, Egypt, &c. by, 337. 



Carbonic acid gas, fimple way to impregnate water with, 416. 

 ■ decomposable by iron in fufion, 402. 



Cajl-iron, on the materials ufed in the manufacture of, 1 3. 

 Caji-Jleel, Clouet's new procefs for making, 400. 

 Co/fan's defcription of the volcano in St. Lucia, I. 

 Charcoal, procefs employed in making, 15. 

 Chaff] an improved machine for cutting, 292. 

 Chladni's theory of found, experiments relating to, 389. 

 Cloth, a new kind of manufacture of, no. 

 Coaks, procefs employed for preparing, 20. 

 Cold, artificial, fingular experiments on, 76, I/O. 

 Contagion, on the gafes which deftroy, 396. 

 Contagious difeafes and fever, Mitchillian theory of, 177. 

 Cornwall, a vein of filver difcovered in, II I. 

 Corruption haftened by electric matter, 5 1. 

 Corf' 's account of the method of catching elephants, 5. 

 Cow-pox, Dr. Pearfon's circular letter refpecting the, 225. 

 Cronjledt on the attachment of birds to their young, 176. 

 Cruichfkank, chemift to the ordnance, a communication from, 396. 

 Cr/Jlancc's machine for making vegetable cuttings for the micro- 

 fcope, 302. 



Deaths, 112, 329, 332. 



Diaphanometer to determine the quantity of vapours exifling in any 



limited part of the atmofphere, 377. 

 Dinner, account of a public Egyptian, 85. 

 Diving machine, defcription of a new one, 59, 171. 



Earth, hints for a theory of the, 33, 147, 294. 

 Economical Society of Btrne, prize queftion by the, 423. 

 Egypt, letters from men of fciencein, 84. 

 Egyptian Inftitute, 84, 88. 



Electoral J ablounfhi Society , prize queftionsby, 420. 

 Electricity, effects of, on vegetable and animal fubftances, 5 f . 

 Elephants, account of the method of catching, 5, 130. 

 Engravings or prints, to cleanfe and whiten, 260. 



EJJentiai 



