REVIEWS 7r» 



variety of the subjects (54), the extent of geographical distriI)ution, 

 and the number of projects (519) are astonishingly large. Doubtless, 

 too, there arc projects which have not been included unknowingly or 

 through failure of the responsible agencies to furnish the information. 

 The wonder is that the omissions are not more numerous. Evidently 

 there are experiments being carried on in private industrial research 

 laboratories along some of the lines, such as paper and pulp, and 

 derived products, in addition to those in this Bulletin mentioned only 

 as part of the work of the Canadian and United States Government 

 forest products laboratories. It is hardly conceivable, for instance, 

 that the New York State Conservation Commission is doing no work 

 which might be classed as forest research, as its non-appearance in the 

 Bulletin would indicate. 



An analysis of the agencies represented shows, the Dominion of 

 Canada with 4 divisions, the United States Department of Agriculture 

 with 3 bureaus, 15 State forestry departments, 14 universities, and 5 

 private organizations contributing. Geographically all the forest re- 

 gions and most of the important types and tree species are being 

 studied. The intensity and amount of research in different States 

 varies greatly. Canada and Newfoundland have 72 projects, of which 

 15 are due to private initiative; the United States Government has 202, 

 States and universities 2 10, and private agencies in the United States 

 onl}- •"). 



The phases of forest research covered and the number of projects 

 devoted to each are as follows : Studies of the identification and 

 distribution of trees, 16 ; experiments in forestation covering the char- 

 acteristics, production, vitality, extraction, and storage of tree seed, 10; 

 nursery methods as to the amounts, time and methods of sowing, 

 treatment of ^eed, fertilizing, shading, watering, protecting, trans- 

 planting and packing nursery stock, 28; time for field sowing and 

 planting, most suitable species, classes of stock to use, and effect of 

 cover, 48. Sub-projects add 23. 43, and 126 to the three forestation 

 groups, respectively. 



Six projects have been undertaken to determine the influence of a 

 forest cover upon precipitation, the melting of snow, and upon stream- 

 flow and erosion. 



The value and methods of establishing windbreaks are being demon- 

 strated in two studies. 



