Periodical Literature. 599 



An extract from the Timber Trades Jour- 

 Dnrab'dity nal bears striking evidence to the long life 



of of creosoted block paving. Even when sub- 



Wood Paving. jected to London traffic, investigation 

 showed that blocks laid 20 years ago, al- 

 though worn, were quite sound, the creosote having thoroughly 

 preserved the wood (species not given.) 



T. S. W., Jr. 



Durability of Wood Paving. Indian Forester, September, 1913, pp. 460. 



A large part of all the wood used in the 



Pencil manufacture of lead pencils comes from the 



Wood. Ozarks. The Red Cedar trees rarely reach 



12" diameter there and are stunted. Only 



the red heart-wood is used, the sapwood is thrown away. The 



timber is usually cut into slats 3/8 inch thick 7 1/4 inches long 



and y/S) to 2 or 3 inches wide. One mill in Southern Missouri 



produces enough of these slats daily to make 1/4 million pencils. 



There are about 15 other mills in 5 different states in the same 



business. 



Lumber Trade Journal. 



Illustrations accompany a short article des- 



Foiir Szveep cribing a four-sweep arrangement hung 



Log from a center pile which is about 14 feet 



Unloader. above four other piles that support it. The 



sweeps are about 30 ft. long and are loosely 



balanced so that the ends can be raised or lowered about five 



feet. They swing across the track so that when one end of a 



sweep is placed against the side of a load of logs, the forward 



movement of the car forces the load off sidewise. The sweep 



has reduced the time of unloading a train to 1/2 or 1/3 of that 



formerly required. 



The Timbernian, November, 1912. 



The Southern Lumberman of Oct. 30, 191 2, 



Stump gives two very good illustrations of a sim- 



Burner. pie device for boring stumps and the 



method of burning them for clearing land. 



The method has proved satisfactory in pine, fir and tamarack 



