STATE FORESTRY PROJECTS 25 



different conditions; the length of time required to produce post- 

 size trees, and the number of posts produced per acre. 



c. Estimate the cost of production and determine which spe- 

 cies lead in cheapness under various conditions. 



d. Plant various species experimentally on the College farm, 

 and on co-operative land in other districts, for the purpose of de- 

 termining the best system of management under average conditions. 



SHADE AND TIMBER TREE SURVEY OF COLORADO 

 STATE FORESTRY PROJECT II. 



For more than thirty years, tree planting for shade and timber 

 purposes has been carried on in Colorado, both on private and on 

 municipal lands. At first, our native cottonwoods were used for 

 planting on account of their being most available and because they 

 were known to be adapted to the soil and the climatic conditions. 

 Numerous other species of trees, however, have been introduced 

 during this period and many of these are now growing in door- 

 yards, along the streets of the older towns and cities or in planta- 

 tions upon the farms of our State. 



The results of these efforts in tree planting, which were some- 

 times failures as well as successes, have been in a measure experi- 

 mental. The varied conditions of soil and climate which are to be 

 met with in this State call for a study of the species best suited to 

 each principal region. The trees now growing here offer valuable 

 data for prospective tree planting and this information should be 

 made available to any who desire it. 



OBJECT OF SURVEY. This survey contemplates the securing 

 of all such data from the trees now growing within our borders, 

 and which have been planted for shade, ornament or timber pur- 

 poses, as will enable the office of State Forester to make recom- 

 mendations along these and similar lines. 



DISTRICTS COVERED. The various districts covered by this 

 survey may be the same as outlined in the Fence Post Investigation 

 and include the following: 



a. South Platte district ; 



b. Arkansas Valley district; 



c. Western Slope Fruit district ; 



d. Plains district. 



The shade tree surveys are to be confined to the principal cities 

 and towns of each district, providing they offer some considerable 

 data. 



The timber claim plantings, which are to be found in each re- 

 gion visited, should be surveyed for such data as they may offer 

 along these lines. 



