Other Current Literature. 75 



field surveys, conducted by the engineers of the Commission. 

 In fact, all the information regarding the Maritime Province 

 powers was obtained in this way last year by the experts of the 

 Commission. A valuable supplement to the work is a series of 

 maps showing the waterpowers in the various provinces and the 

 irrigation canals in Alberta. — From Pulp and Paper Magazine 

 of Canada. 



OTHER CURRENT LITERATURE. 



Avalanches and Forest Corer in the Northern Cascades. By 

 T. T. Munger. Circular 173, U. S. Forest Service. Washington, 

 D. C. 191 1. Pp. 12. 



A discussion of the character of the region, character of ava- 

 lanches, relation of forest cover to the formation of slope slides, 

 effect of forest in checking avalanches, protection of forests in the 

 Alps, and preventive measures in the Xortheni Cascades. 



Manufacture and Utilisation of Hickory, iqii. By C. F. 

 Hatch. Circular 187, U. S. Forest Service. Washington, D. C. 

 191 1. Pp. 16. 



Strength Values for Structural Timbers. By McGarvey Cline. 

 Circular 189, Forest Products Laboratory Series, U. S. Forest 

 Service. Washington, D. C. 1912. Pp. 8. 



Modification of the Sulphonation Test for Creosote. By E. 

 Bateman. Circular 191, Forest Products Laboratory Series, U. 

 S. Forest Service. Washington, D. C. 1912. Pp. 7. 



The Prevention of Sap Stain in Lumber. By H. F. Weiss and 



C. T. Barnum. Circular 192, U. S. Forest Service. Washington, 



D. C. 191 1. Pp. 19. 



Progress Report on Wood-Paving Bxperinients in Minneapo- 

 lis. By F. M. Bond. Circular 194, Forest Products Laboratory 

 Series, U. S. Forest Service. Washington, D. C. 191 2. Pp. 19. 



