” pyroligneous, 111, 144, 263 ” sulphuric, 161, 285 ” vegetable, 111 Age of trees, how to ascertain, 9 Air, admission of, to prevent or cure rot, 27, 171, 187, 284, 292 Alberti (L. B.), on seasoning wood, 66, 75 Alcohol, in corrosive sublimate, 263, 265, 266, 279 Alderson’s (Captain), experiments with woods, 127 Alkali, caustic, 122 Alum, to prevent combustion, 118 ” experiments with, 119 ” and other substances, 156, 166, 167 American method of preserving ships’ masts, 111 ” oak, inferior to English, 40 Ammonia, to cure rot, 118, 137 ” and other substances, 131, 286 Amsterdam, built on piles, 23 Annual rings in wood, 8 Ants, black, how to destroy, 287 ” white, description of, 240 ” ” how to destroy, 251, 286 ” ” in Australia, Bahia, and Pernambuco, 245 ” ” in Batavia, 247 ” ” in Brazil, 244 ” ” in Ceylon and the Philippine Islands, 246 ” ” in France and Japan, 248 ” ” in India, 251 ” ” in Jamaica, 241 ” ” in Spain, Senegal, and Surinam, 248 ” ” woods which resist, 249 Armstrong’s (J.), account of rotten floor, 43 Arsenic, 224, 252, 287 ” experiments with, 167 ” and other substances, 253 Asphalte, to keep out damp, 179 Australian method of seasoning Jarrah wood, 115 Baker’s (J.), case of dry rot in Baltic wood, 177 Ballast for railway sleepers, 48, 138 Bank of England, dry rot in dome, 42 Banks (Sir J.), on growth of fungi, 44 Barium sulphide, to preserve wood, 156 Barlow’s patent process, 102 ” on seasoning wood, 78 Barnacles on timber piles, 223, 226 Barry (Sir C.), on steaming wood, 90 Baryta, and other substances, 166 Basement stories with damp, 23, 181, 182, 187 Bayonne, girder in church at, 174 Beams, advantage of sawing, 32 Bees, carpenter, destroy wood, 240, 259 ” wax, and other substances, 156 Beetles, in wood, 262, 275 ” how to destroy, 286 Belgian engineers prefer charred sleepers, 96 Belidor, on felling trees, 54 Belton House (Earl Brownlow’s), beetles in carvings at, 268, 281 Bentham (Sir S.), on drying oak, 91 Benzine, to destroy wood beetles, 266, 277, 286 Berkeley, on fungi, 21 Bethell’s (J.), patent creosoting process, 130, 155, 224, 234, 286 ” ” drying stoves, 86 Binmer, on steaming and charring, 99 Biot, on pressure process, 144 Blenheim, state of carvings at, 281 ” carvings in yellow deal at, 273 Blood, and other substances, 167 Bond timber, decay of in walls, 45, 174 Borax, a receipt for black ants, 287 ” and other substances, 156 Boucherie’s (Dr.), sulphate of copper process, 146