1164 



Canadian Forestry Journal, June, 1917 



A New Log Boom for Rough Waters 



The ordinary form of log-boom, so 

 familiar on the Pacific coast, is liable 

 to be broken up and the logs lost, if 

 the boom should be unfortunate 

 enough to meet rough weather while 

 m tow. Even in the comparatively 

 sheltered waters along the coast large 

 and valuable booms of logs are fre- 

 quently lost, but the risk is consider- 

 ably greater where the boom is to be 

 towed through more exposed waters, 

 where it is not unusual for the tow 

 to go adrift, or a large portion of the 

 logs escape with but small chances 

 for recovery. 



The losses from this cause have 

 run into large figures annually and 

 the risk from certain localities has 

 been too great to permit the develop- 

 ment of some valuable timber limits. 



The new system of log-rafting 

 patented by G. G. Davis, of Van- 

 couver, is creating increasing interest 

 among the loggers and mill men in 

 British Columbia. 



The illustration reproduced here- 

 with will give an idea of the principles 

 of the new system. This form of 

 rafting may be constructed at a cost 

 of 12c to 35c per M., depending on 

 the locality and kind of timber. The 

 percentage of loss in this system has 

 been extremely low, while in the old 

 method the loss in exposed w^aters, 

 such as the west coast of Vancouver 

 Island, has occasionally been as high 

 as 50 per cent. 



There was one Davis raft lost in 

 Queen Charlotte Sound, the weather 

 and sea having become so rough that 



the tug boat had to cut clear and run 

 for shelter. This raft was last seen 

 by a Japanese liner over 2000 miles 

 at sea and still intact. Among other 

 records of the success of this system 

 is that of towing 30,000 feet of logs 

 from Ocean Falls to Puget Sound, a 

 distance of over 500 miles, without 

 anv loss whatever. 



What the forest fire thieves in one 

 year would pay the premiums on 

 S1,000 life insurance for 300,000 Can- 

 adians at 25 years of age. 



It would almost double the pen- 

 sions on 19,000 disabled soldiers. 



Everything Up But 

 Lumber and Shingles! 



Aqrophic comparison- Pnce Vor lofions inBuildmq 

 Mgrerials covering opened oFFive Yeors 



CEMENT. 



CEMENT. 



915 19.6 



ADVANCE 



BRICK. 



IP 3% 



ADVANCE 



ji fcg l$afoS 



ADVANCE 



ADVANCE 



SHINGLES. 



gHINSLES 



DECREASE 



Chart showing the relatively small advances In the 



prices of lumber and shingles as compared w/lth other 



building materials during the past five years. 



