187 
with different kinds of tie plates and rail-fastenings in a test 
track. The woods under experiment were Pseudotsuga Douglasi 
(Douglas Fir), Larix occidentalis (Western Larch), Tsuga 
ee (Western Hemlock), and Thuya plicata (Canoe 
edar 
" 
““The Estimation. of Moisture in Creosoted Wood,’ by 
‘The Seasoning and Preservative Treatment of Hemlock and 
Tamarack Cross-ties,’ by W. F. Sherfesee, pp. 1-31, Forest 
Service Circular 132, U.S. Dept. of Agric. This deals with 
seasoning of timber and impregnation with zinc-chloride under 
various conditions. The results of the investigations appear to 
indi should not be 
under brush, open tank and pressure treatment. Oil of creosote, 
Numerous illustrations are given. Sce also Circular 103, Season- 
bulletin the advantages and disadvantages of variou ys of 
sawing logs, seasoning, impregnation, and t 
are dealt wi e work is well illustrated. 
‘The Open-tank Method for the Treatment of Timber,’’ by 
Carl G. Crawford, pp. 1-15, Forest Service Circular 101, U 
Dept. of Agric. This deals with the open air treatment of 
timber. ; 
“Condition of Experimental Chestnut Poles in the Warren- 
Buffalo and Poughkeepsie-Newton Square lines after Five and 
Eight Years’ Service,” by Carlile P. Winslow, pp. 1-13, Forest 
Service Circular 198, U.S. Dept. of Agric. 
