314 



C'aiuuliaii I-orcstry Journal . June, 1920. 



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RU-BER-OID ROOFING 



Is the peer of any composition roofing made. 



It has a proud record of service, covering more than a quarter of 



a century. 



On many a rocf the limit of its endurance has not yet been found 

 after more than twenty years of duty. 



Inborn quality, from the surface to the centre, is what gives RU- 

 BER-OID its character. 



A^ujunviufpu 



We would suggest you consider this, for your own benefit, when planning 

 to purchase a roof covering for that new or old building. 



THE STANDARD PAINT COMPANY OF 

 CANADA, LTD. 



52 Victoria Square : : : : MONTREAL, QUE. 



in the protected zone is sufficient to 

 offset fully the effects of shading and 

 sapping. In a wheat field protected 

 by a dense windbreak the grain 

 amounted to about 10 bushels per acre 

 where the protection was most com- 

 plete, and gradually grew less as the 

 distance from the windbreak increas- 

 ed. The total gain was about equal 

 to the amount of o-rain which could 



have been grown on the shaded ground 

 near the trees. The season in which 

 the measurements were taken was not 

 of high winds, nor did it lack mois- 

 ture. It would appear, therefore, that 

 in a windy year when evaporation was 

 high the total gain for the field would 

 much more than balance the loss. In 

 another case, barley on the south of 

 an ash and honev locust windbreak 



a » t ■"•'^- 



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"Canoes that have made Maps and History." 



EXPLORERS, TRADERS AND TRAPPERS HAVE KNOWN THE 

 QUALITY OF LAKEFIELD CANOES FOR OVER FIFTY YEARS 



When Canadian forests were in their pristine glory and when 

 the canoe was the chief means of wilderness transportation, 

 THE LAKEFIELD CANOE was being made and sold. We 

 build Canoes and Boats for every known purpose and have several 

 models with diflferent sizes in each for every possible requirement. 



Write for Catalogue. It is free. 



THE LAKEFIELD CANOE & BOAT CO., LTD. 



LAKEFIELD ONTARIO CANADA 



".".".••.••.••."» 



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Mention the Forestry Journal for your identification. 



