426 Forestry Quarterly 



yards, and equipping every fourth or fifth house as a fort with 

 trenches, defended by wire entanglements, machine guns, and 

 telephonic communication. 



Hollowed redwood logs, used for water-piping, which were 

 laid at Fort Bragg, California, and which were in use 16 years, 

 until their capacity became too limited, have been relaid after 

 ten years' exposure to the elements. Close examination of the 

 timber after this long period of idleness revealed it to be in such 

 good condition that it is expected the piping will be serviceable 

 for many years to come. 



Wood-flour, especially from pine and spruce sawdust, ground 

 in mills similar to those which grind grain, is used as an ingre- 

 dient of dynamite, linoleum, etc. Wood-flour dynamite, though 

 inferior to that made with infusorial earth as an absorbent for 

 nitroglycerine, the explosive ingredient, because of being cheaper, 

 answers many uses. In making linoleum this wood-flour mixed 

 with linseed oil gives body to floor coverings. It is also useful in 

 the manufacture of xyolite, a kind of artificial floor covering 

 resembling wood in weight and stone in other respects, and said to 

 be impervious to water and fireproof. 



Mr. Aubrey White, for 28 years Assistant Commissioner of 

 Crown Lands and Deputy Minister of Lands and Forests of the 

 Province of Ontario, died on July 14, in his seventieth year. 



To foresters Mr. White was known mainly as having for the 

 first time organized a fire patrol for the Ontario Crown Lands as 

 long ago as the early eighties, when this idea was as yet 

 undeveloped. 



Although Mr. White was found at forestry meetings an active 

 participant and was one of the past presidents of the Canadian 

 Forestry Association, it cannot be said that he was active in the 

 practical application of forestry methods in the administration of 

 the Crown Lands. This was perhaps natural for one who was 

 expected to secure present revenue under the license system, and 

 who. through long continued service in the administration of this 

 system, had become staid and conservative in method. 



