APPENDIX C LXXXIX 



as to provide data as to the time and expense incurred in bringing the 

 material to a suitable condition for treatment. It was not found 

 possible to secure a satisfactory treatment of hemlock by any means 

 now in use without going beyond the bounds of expense imposed by 

 practical considerations. By means of a new method and apparatus 

 which have been worked out at the Laboratories, however, it has been 

 possible to give a satisfactory treatment to hemlock at a moderate 

 cost. The same system applied to other woods,* including jack pine, 

 will give a satisfactory treatment at a much lower cost than now 

 prevails. A patent covering the apparatus used has been applied for 

 and a bulletin descriptive of the work and results is in preparation. 



PuLPWooD Measurement 



In connection with the investigation of the possibilitiies and 

 advantages of the system of barking, chipping, drying and baling 

 pulpwood for shipping to the pulp mills, an installation of a Hess 

 drier in Wisconsin was inspected during a test run and information 

 was obtained at first hand as to the costs and operation of baling presses. 

 This information, together with that previously at hand, led to the 

 conclusion that it should be possible to effect a saving by handling 

 pulpwood in this way under certain circumstances. The work has 

 already borne fruit and the Davison Lumber Company, Bridgewater, 

 N.S., are already using the system on a commercial scale. When the 

 commercial possibilities are sufficiently demonstrated, as we fully 

 expect they will be, the system may be expected to spread to a 

 great extent. Its main value is in making available as pulpwood, 

 material such as slabs which are now wasted, and in opening up 

 districts where species suitable for pulp are now growing, but which are 

 too far from the mills to allow of the pulpwood being shipped under the 

 present system. 



Chemistry of Wood 



Efficient and reliable methods of analysis of woods have been 

 developed and standardized and preliminary data regarding the 

 composition of black spruce, white spruce, red spruce, balsam fir, jack 

 pine, and poplar have been obtained. A study of the resin content 

 of black spruce, white spruce, balsam fir, hemlock and jack pine and the 

 effect of river driving and of storage on the resin content has been 

 started. Good progress has been made, though it will take at least 

 a year longer for the present staff to complete the work planned. 

 Besides investigating the resin content, the plan also includes a deter- 

 mination of the composition of the wood and an investigation of the 

 factors concerned with seasoning of pulpwood. In addition to the 



