THE STORY OF A PIECE OF COAL1896 |
Otras ediciones - Ver todas
Términos y frases comunes
Acrogens ammonia amongst amount aniline dyes aniline oil anthracite appears bark become beds of coal beneath benzene bituminous coal burns Calamites carbonic acid carboniferous caused chemical clay club-mosses coal-bearing strata coal-beds coal-field coal-measures coal-mine coal-seams Coal-shale coal-tar coke combustion conifers constituents contained Davy lamp deposited diamond distillation encrinites existence explosion extent fact feet of coal feet thick fire-damp flame forest formation formed fossil fractional distillation fuel gases graphite heat hydrogen illuminating impurities iron known lamps land layer Lepidodendron less lignite lime mass mineral mines naked light naphtha natural nitrobenzene obtained owing paraffin pass peat Pecopteris petroleum plants portion production proportion quantity result retorts river sand sandstone seams of coal sediment shaft shale sigillaria species spores square miles stem stigmaria strata substance sulphuric acid supplies surface tion toluidine trees trunk underclays vapour various vegetation ventilation volatile whilst