DEPARTMENT OF THE INTERIOR, 

 FORESTRY BRANCH, 



OTTAWA, April 29, 1912. 



SIR, I submit herewith a report which has been prepared by Mr. T. W. Dwight 

 of his investigations of last season in regard to the relation of the species of timber 

 in the Kocky Mountains Forest Keserve, the effect of the methods of lumbering 

 followed on their reproduction, and the extent to which natural reproduction has 

 followed. 



The work that has been done by Mr. Dwight in this way will be of great 

 assistance in determining the methods which are to be followed in the cutting of 

 timber so as to ensure the natural reproduction of the best species. Investigations of 

 this kind enable us to plan methods with greater certainty that the results will be 

 those that we intended to reach. It is important that we should have a thorough 

 understanding of natural reproduction and of the factors which govern it, as we must 

 depend on it very largely for the reproduction of our forests, as reproduction by 

 artificial means will be too expensive to be used extensively at the present time, and 

 we should resort to it only where natural reproduction is clearly not sufficient to 

 accomplish the work. 



I would recommend that this report of Mr. Dwight 's be printed as a bulletin of 

 this Branch. 



Respectfully submitted, 



R. H. CAMPBELL, 



Director of Forestry. 

 W. W. CORY. Esq., C.M.G.. 



Deputy Minister of the Interior. 



