22 STATE FORESTRY PROJECTS 



in its co-operative agreements of this kind, the right to first publi- 

 cation of data resulting from the posts described in this working 

 plan is reserved to the United States Department of Agriculture. 

 This right may be waived by the Director of the Forest Products 

 Laboratory if the Forestry Department of the State Agricultural 

 College desires to use the data before the U. S. Forest Service has 

 published the results. 



During August of the present year the first experimental post 

 treating was done, in which 270 posts of the three species men- 

 tioned were treated, some with coal tar, some with creosote oil, by 

 the open tank process, while others were given brush treatment with 

 these two materials. A number of posts were left without treat- 

 ment to be set in that condition as checks upon the effects of the 

 preservative treatment. These posts are now being set upon the 

 college farm and will be inspected at intervals during their life. 



STATE FORESTRY PROJECTS. 



Several line^ of work concerning the growing of trees for 

 timber, and other purposes apart from fruit growing, which seem 

 to call for study and investigation have been outlined as projects 

 to be carried on as time and money permit. The following proj- 

 ects have been outlined in detail and some work has been done in 

 connection with each of them. 



PRESERVATIVE TREATMENT OF FENCE POSTS. 



(State Forestry Investigation). 



PROJECT I. 



The co-operative timber treating plant, which is now installed 

 on the College grounds and which has been put in charge of the 

 State Forester, makes it possible to take up the investigation of 

 treating cheap and rapid growing species of timber for fence posts. 

 The office of the Forest Products Laboratory, at Boulder, has of- 

 fered a suggestive outline for carrying on this work on which the 

 following is based : 



SCOPE OF THE WORK. This investigation is undertaken pri- 

 marily to demonstrate ways and secure data on prolonging the serv- 

 ice period of fence posts by means of one or more principal methods 

 of preservative treatment. The cheap and rapid growing species 

 such as can be readily grown on the farms of Colorado are to be 

 most extensively used. 



The investigation should extend over a period of twenty-five 



