III. Timber 



(continued from Part LI 1 1, p, 163). 



PACE. 



Microscopic Structure 191 



Crystals (Calcium oxalate) . ... 195 



"Wastes not useless " 196 



A warning note in regard to undue reliance 

 on the microscopic structure for diagnostic 



purposes L96 



Paper Pulp . 197 



Heartwood and Sapwood ...... 198 



Seasoning \ 199 



Specific Gravity 201 



Hardness 204 



Fissility and interlockedness ...... 208 



Inflammability and fire-woods (including forest 



trees) 209 



Destructive distillation 210 



Ash 212 



Calorific value of timbers 2T3 



Explanation of Plates (220-223) 216 



