INPEX TO VG6L. ¥.. 
Acids round in the Rio Vinapro, 191 a 
Aerolite of Maryland, G. Chilton’s analysts, 13} 
Affinity, chemical, 91 
Africa, Central, civilized nation in, 592 
Alcohol, rectification of, 378 
Amber, large mass of, 17] 
Ammonia disengaged from plants, 190 
Analysis of the Maryland Aerolite, 131 
Andalusite, 394 : 
Anthracite, L. Vanuxem’s experiments on, 1f2 
of Pennsylvania, editor on, 331 
Avrts, notice of certain processes in the, 359 
Atwater, Caleb, notes on Ohio, 1 
Batracian reptiles, new species of, 53 i 
Beck, L. C., botany of Illinois and Missouri, 257 
Bird, Rev. I., minerals from Palestine, 21 
Birds, migrating,,192 
: notes of, 390 
Bleaching powder, 360 
Botany of Illinois and Missouri, 257 
Bowlders, Peter Dobson on, 217 
Brewster’s wool-spinning frame, 136 
- Galdwell, president, thermometrical observations, 294 
anal, Erie, 398 
Carbon, fusion of, 109 : 
Caricography, by Prof. Dewey, 30, 265 
Carpenter and Spackman, notice of minerals, 218 
Charcoal, animal,—prevents putrefaction, 189 _ 
Chemistry, Dr. Thomson’s first principles of, 162 
Chilton, George, his experiments, 131, 215 
Chloropheite, 393 
Chloruret of lime, 386 
Chronometers, 185 
Cicada, 327 
Cinchona bark, correetion concerning, 203 
Clam, history of the catable, 287 
Cleaveland, Prof. on the motion of water-wheels, 129 
Coal, anthracite, of Pennsylvania, 331 
Cold weather of 1825—6, 399 
Colours produced by vibration, 188 
Colton, Simeon, notice of loéalities of minerals, 12- 
Combustion, 79 
Stage spontancous, 365 
Comets, tails of ,°395. 
Compound resembling’gdld, 334. 
Cotton-seed, illuminating gas from, 362 
Cetton stuffs, process of singeing, 359 
Crank motion, remarks on Mr. Quinby’s asticle,"93 
- correction concerning, 203 
(Von. “No? att 
