. Experiments in the preservative treatment of red-oak and hard-maple crossties . 24 (?)115 115 116 (? 116 117 138. 09 117117117117117117117117117117118118 P
. Experiments in the preservative treatment of red-oak and hard-maple crossties . 24 (?)115 115 116 (? 116 117 138. 09 117117117117117117117117117117118118 PCTCt. Pou nds. , 72. J- * 23. 8 20. 0 16. 2 | 55. 3 ; 1 85. * Sawed for penetration determinations, and therefore not laid in track. 1 Absorption emulsion of 80 parts of 3 per cent ZnCl2 solution and 20 parts of creosote by volume atapproximately 70° F. KECOKDS. 65 Table 7.—General records on the individual ties— R D—M A P LE—Continued. No. ofcylin-dercharge. Oven-dry weightper cubic foot. Vol- ume of tie. Average numberof annual ringsper inch in— Heart-wood. Sap-wood. Sap-wood. Mois-turein tiewhentreated. Weight of tie. Di- Di- rectly rectly before after treat- treat- ment. ment. Pounds. Pounds. 148 189 134 196 127 207 146 187 132 199 140 178 138 182 140 180 134 192 151 233 145 191 167 230 139 180 147 202 151 194 180 228 172 216 140 220 131 203 176 230 144 220 157 207 147 180 131 196 185 228 200 256 134 200 145 208 170 212 198 244 166 227 162 218 168 226 165 218 111 162 122 172 97 162 140 194 168 222 142 200 146 206 130 186 Beforelaying in
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectwoodpre, bookyear1913
