Current Literature 367 



drying with spring or fall piling, and about the same as air-dried 

 summer-piled stock. 



Of 80,000 feet of Western Yellow pine kiln-dried 10 days 

 about 80 per cent retained its original grade ; the average loss 

 was $1.55 per thousand board feet. In the case of a tally of 

 53,000 feet of Douglas fir, about 90 per cent was successfully 

 kiln-dried (5 days) with an average loss of 53 cents for 1-inch 

 and $2.90 for 2-inch lumber, per thousand feet. 



While the above data are insufficient in amount, range of con- 

 ditions, and length of time to warrant a final statement as 

 regards the amount of loss or the best means of reducing it, 

 yet this local study draws attention to an important problem for 

 investigation. 



J. H. W^ 



Wood-Using Industries of the Prairie Provinces. By R. G. 

 Lewis and W. G. H. Boyce. Bulletin 50, Forestry Branch. 

 Ottawa, Canada. 1915. Pp. 75. 



This is a statistical treatment of reports received from over 

 300 manufacturers in the provinces of Manitoba, Saskatchewan 

 and Alberta, using wood as a raw material. 



The wood-using industries are developed to a much smaller 

 degree in the Prairie Provinces than is the case in eastern Canada. 

 Only some 68 million feet of raw material was used, costing 

 about 2.3 million dollars. Douglas fir formed 22 per cent, pine 

 20, spruce 18, and cedar 15 per cent of the total quantity. The 

 average cost of the raw material was: Douglas fir, $35.26, pine 

 $29.21. spruce $15.68, and cedar $32.34, per M feet B.M. 



Eighty-four per cent of the raw material was purchased out- 

 side the three provinces. Almost one-half of this, or 33 million 

 feet, came from British Columbia, principally Douglas fir and 

 cedar; United States supplied over one-fifth of it, mostly oak 

 and other hardwoods ; while Ontario and Quebec supplied an 

 equal amount, largely pine and, oddly enough, poplar. The raw 

 material of local source was, of course, spruce and poplar. 



Of the total consumption of raw material, the sash and door 

 industries used nearly two-thirds, box manufacture 16.2 per cent, 

 vehicles 5.4 per cent, and furniture 3.1 per cent. 



