1906 



FORESTRY AND IRRIGATION 



565 



tion of this series of tests poles will be 

 set in an experimental line for the pur- 

 pose of obtaining comparative results. 

 The Forest Service has recently 

 been investigating- the method of treat- 

 ing tamarack and hemlock ties used 

 by the Chicago and Northwestern 

 Railroad at its plant at Escanaba, 

 Mich. A number of ties have been 

 cut at various seasons of the year and 

 allowed to season, and are now being 



with seasoned untreated and green un- 

 treated ties, will later be placed in an 

 experimental tract for comparative 

 tests. 



C. G. Crawford, after an inspecting 

 trip to the mines of the Philadelphia 

 and Reading Coal and Iron Company, 

 reports highly encouraigng progress 

 in the experimental treatments which 

 the company is carrying on to ascer- 

 tain the best methods of handling and 



MEETING OF SUPERVISORS OF CALIFORNIA RESERVES AT NORTHFORK. 

 Reading from left to right, beginning with front row E. S. Mainwaring, J. B. Adams, 

 M. B. Elliott, S. L. N. Ellis, C. H. Shinn, Geo. A. Coleman, J. R. Bell, R. L. P. Bige- 

 low, W. M. Slosson, L. A. Barrett, A. H. Hogue, Coert DuBois. 



treated in a series of experimental runs 

 at the Escanaba plant. It has been 

 found that green tamarack and hem- 

 lock weighing as much as 48 and 50 

 pounds per cubic foot can not be treat- 

 ed successfully, but that when the tim- 

 ber is seasoned to a weight of 38 to 

 42 pounds per cubic foot good results 

 can be obtained. Both the Burnettiz- 

 ing and the Wellhouse processes have 

 been used. The treated ties, together 



treating mine props. Though the treat- 

 ed timbers have been in the mines only 

 about four months their superiority is 

 shown by the fact that they remain 

 free from the decay which has attacked 

 the untreated timber. Plans are now 

 under way for the erection of a small 

 commercial plant to test further the 

 advisability of using treated timbers on 

 a larger scale. 



W. E. I [erring, formerly connected 



