480 JOURNAL OF FORESTRY 



What will interest foresters particularly is the part reciting from 

 various sources the climax formations of North America. 



A discussion of the need of geological, as well as meteorological, 

 changes in the past as a basis for understanding present conditions, is 

 followed by an attempt to trace the successions of plant formations 

 through geological eras. An extensive bibliography, containing nearly 

 1,000 titles, concludes this most complete summary of present ecolog- 

 ical knowledge. B. E. F. 



