358 NOTES AND COMMENT 



article on "Safety First in Tree Planting." Notable invasions of 

 parasites affecting agricultural plants and forest trees are mentioned, 

 general movements of parasites from district to district within the 

 United States are discussed, and preventive measures are suggested. 



J. G. Brown. 



Mr. Raphael Zon has contributed a paper to the October number of 

 The Geographical Review on the timber resources of South America, 

 accompanied by a map showing the regions from which the leading 

 timber trees are secured. South America is now importing North 

 American timber instead of developing its own timber resources. The 

 reasons for this are the scarcity of valuable trees which occur in pure 

 stands and the expensiveness of all lumbering operations. The princi- 

 pal trees of commercial importance in South America at the present 

 time are Parana pine, Spanish cedar, both chiefly cut in southern 

 Brazil, Quebracho, a source of tannin, and Greenheart, used in building 

 ships and' docks. 



The third annual Report of the Botanical OfRce of British Columbia 

 has been made by the Provincial Botanist, Mr. J. Davidson. One 

 of the principal pieces of exploration carried out during the past year 

 was in the Skagit Valley. The vegetation of this region is described 

 and illusti'ated, and a list of its plants is given. Transitional features 

 are shown between the humid conditions of the coast and the relatively 

 dry conditions of the unforested interior. 



The Botanical Society of Washington has elected the following 

 officers for the ensuing year: President, Mr. T. H. Kearney; Vice- 

 president, Mr. Edgar L. Brown; Recording Secretary, Mr. Charles E. 

 Chambliss; Corresponding Secretary, Dr. H. L. Shantz; Treasurer, 

 Mr. F. D. Farrell. Mr. A. S. Hitchcock was nominated by the Society 

 for the office of Vice-president of the Washington Academy of^Sciences. 



