FORESTRY LN COLORADO 



1 1 



I find, too, the people in the newer and more distant places seem 

 to need help and they also feel that they are just as worthy of con- 

 sideration as those who live nearer to the College. At Kremmling 

 there was an especial satisfaction expressed because of the interest 

 taken in them. 



"Reports sent from the field gave the disposition made of the 

 posts after treating, except in cases cited below. These posts were 

 distributed to men who will set them for experimental purposes 

 and who will make a report when asked for it. 

 "Respectfully submitted, 



"(Signed) JOHN R. WHALER," 



Fort Collins, Colorado, 

 Ooctober 9, 1914. 



Most of the post-treating work was done with Denver gas 

 tar creosote, which is a by-product in the manufacture of illumi- 

 nating gas from coal. This material can be purchased F. O. B. 

 Denver for 2oc per 'gallon. It is a rather thin, sirupy liquid, having 

 the odor of illuminating gas and a rapid penetration when applied 

 to an absorbing surface. Similar creosote may be obtained from 

 the Omaha Gas Works, Omaha, Nebraska; the International Creo- 

 soting and Construction Company, Galveston, Texas ; or Barrett 

 Manufacturing Company, Chicago. 



In most cases the cost of the treatment was about IDC per post. 

 The cost of the treating tank and heating jacket combined was $45. 

 These tanks were made especially heavy on account of the severe 

 treatment they were expected to receive in shipment from one point 

 to another. 



In making the treatment, the tank was first filled with posts 

 and then the creosote was added to a height of at least 30 inches. 

 A fire was then built under the tank and the temperature raised to 

 about the point of boiling water. The fire was then removed and 

 the creosote allowed to cool to its original temperature while the 

 posts were left in. The heating causes the air within the pores of 

 the wood to expand and escape, and the subsequent cooling forces 

 the creosote into the pores of the wood by atmospheric pressure 

 aided by the capillary attraction. 



A CHEAP OUTFIT FOR THE PRESERVATIVE TREAT- 

 MENT OF FENCE POSTS ON THE FARM 



A smaller but much cheaper treating tank than the one pre- 

 viously described can be made from one of the galvanized steel 

 barrels used for shipping oil and gasoline. These barrels, which can 

 be bought for about $6 or $7 are 36 inches high by 22 inches in 



