The present "bulletin, an introductory to this wider field of plant 

 importation J lias nevertheless been prepared as from the Division of 

 Forestry, since it discusses the general considerations which should 

 guide in an attempt at plant introduction, and which, in part at least, 

 have also a bearing on the acclimatization of forest-planting material. 

 Eespectfully, 



B. E. Fernow, 

 Chief of Division, 

 lion. James Wilson, 



Secretary of Agriculture* 



