LETTER TO TEACHERS. 



To the teachers of the northern Rockies: 



This bulletin of the Bureau of Education has been prepared by 

 one who knows well the cone-bearing trees of the forests of the 

 section in which you live, and the needs of teachers and children 

 who would study these trees. The text of this bulletin is not intended 

 to be conned and recited as textbooks too often are ; it is intended to 

 be used as a suggestive guide in the out-of-door study of the trees 

 themselves. Should pupils in the schools or other people want 

 copies of the bulletin, they can be had from the Superintendent of 

 Documents, Washington, D. C., for 15 cents. 



P. P. CLAXTON, Commissioner. 



NOTE. 



The purpose of this bulletin is to enable persons not technically 

 trained in botany to identify the coniferous species of the northern 

 Rocky Mountain region lying within the United States. 



Nothing is published at present, so far as can be ascertained, which 

 presents with adequate illustrations and in nontechnical language 

 descriptions of the trees of the northern Rocky Mountain region. 

 That some such publication is desirable is indicated by the frequent 

 inquiries for literature on this subject in definite, concise, and popular 

 form. This need is felt by teachers of nature study in the public 

 schools scattered throughout the northern 'Rocky Mountain country, 

 as well as by foresters, farmers, and others whose work or pleasure 

 takes them out of doors. 



Acknowledgments are due to Prof. M. J. Elrod, of the University 

 of Montana, for some of the photographs used herein, and to Mr. 

 E. E. Hubert, of the Bureau of Plant Industry, who has made most 

 of the drawings. 



