112 Forestry Quarterly. 



other countries, which at a time of shortage the United States 

 would be able to draw upon as a source of supply. Zon shows 

 conclusively that we must not look to other countries for timber 

 imports, since there are but three important European countries, 

 Russia, Finland and Sweden, which can export to a great extent 

 without decreasing their natural forest resources. It is true that 

 by more intensive management the forest productivity in Europe 

 has largely increased, yet this will result in a small increase as 

 compared with the increasing needs for wood products. Even the 

 substitution of cement and iron in construction purposes cannot 

 alter the ever-increasing demand for wood products. According 

 to Zion, in European countries, the total forested area is estimated 

 at 750,112,821 acres, and in countries outside of Europe the total 

 forested area aggregates 3,050,298,009 acres. The total forested 

 area of the world is thus almost 4,000,000,000 acres, or a quarter 

 of the total land area. This does not include the forests of 

 China, Korea, South America, nor Africa, for which there is 

 no available data, but we should bear in mind that most of the 

 species in those countries not enumerated are hardwoods, which 

 could never be used for general building purposes, or are species 

 totally unsuited on account of their composition. For each coun- 

 try on which reliable data is available is given the forest area, 

 distribution, composition of forests, character of forests, present 

 stand and annual growth, annual cut, home consumption, and 

 wood prices. Since the data is based on the best available 

 sources, "The Forest Resources of the World" will prove an 

 exceedingly valuable reference book for public speakers and con- 

 servationists who wish to consider forestry from a very broad 

 standpoint. The data is conveniently arranged, and is exceed- 

 ingly valuable for reference purposes. T. S. W., Jr. 



Schlich's Manual of Forestry. Volume II: Silviculture. By 

 Sir Wm. Schlich. Fourth Edition, Revised. London. 1910. 

 Pp. 424. 



The fourth edition of this volume, almost the only one on 

 silviculture in the English language, follows closely the make-up 

 of the third edition, which itself was constructed after the pattern 

 of the first edition, with a section on the foundations of silvicul- 



