Pritchard’s report on sea-worms, 156, 233 Processes, rules for successful, 110 ” pressure and vacuum, 168 Prussiate of copper (Boucherie’s process), 146 ” of iron ” ” 146 Pyroligneous acid, 111, 144, 263 Pyrolignite of iron, 130, 146, 151, 234 ” ” and oil of tar, 156 Quassia, 266, 285 ” and colocynth, 263 Quatrefages’ experiments, 225, 242 Quicklime, if dry, preserves wood, 116 Railway sleepers, 47, 49, 74, 101, 103, 125, 134, 136, 138, 140, 143, 149, 151, 152, 251, 254 Rance’s experiments with chloride of sodium, 164 Randall (J.), on oxidating wood, 98 Ransome’s silicate of soda process, 156, 227 Rats, how to get rid of, 173 Reid’s vegetable acid process, 111 Remedies for white ants, 286 ” for black ants, 287 ” for dry rot, 284 ” worms in carvings, 286 ” ” in piles, 285 Renwick’s vapour of creosote process, 146 Resin, and other substances, 122, 159, 161, 285 Robins, oleaginous vapour process, 157 Rogers (W. J.), the wood carver, 72, 268, 274 Rot, internal causes of, 32 ” in timber, how to ascertain, 33, 185 ” ” to prevent, 283 ” ” to cure, 284 Salt, bay, to preserve ships, 114 ” common, to preserve ships, 112 ” ” to preserve railway sleepers, 74 ” water, lime, &c., to preserve wood, 73, 111 ” vessels last long, 114 Saltpetre, to preserve ships, 114 Salts, deliquescent, corrode metals, 112 Sand and coal tar, 284 ” and petroleum, 109 ” bath, 116 ” sea, 113, 181 Sapwood in different woods, 3 Saturating woods to resist beetles, 279 Scott’s (Col.) paint for ants, 253 Sea salt and copperas, 166 ” sand, 113, 181 ” water, effect of, on iron, 230 ” weed, 113 ” worms, 203 Seasoning by air, and exposure in stacks, 64 ” ” heated, 80 ” by extraction of sap, 101 ” ” water, fresh, 71 ” ” ” salt, 73, 113 ” ” ” ” sea-weed, and sea-sand, 115 ” ” ” lime, 73, 111 ” ” smoke, 91 ” ” steaming and boiling, 77 ” ” ” charring, 99 ” ” gas, 97, 164 ” ” sand bath, 116 ” ” scorching and charring, 95,97 ” ” baking, 79, 81, 86, 88, 94 ” oak, 69, 70, 72, 289 ” second, 103 Sea-worms, woods which resist, 223 Selenite, experiments with, 119 Shakes in wood, 10, 249, 250 Shaw (Capt. E. M.), on admission of air, 120, 171 Shield’s remedy for white ants, 245, 256 Ships, 99, 111, 112, 114, 116, 117, 194, 251 ” dry rot in, 23, 26, 73, 93, 112, 114 Silicate of potash, 155