3rd August, 1955 to approximately 30 acres of bush; the treatments consisted 



of spraying 4 gallons of 2, 4 and 6 pounds of acid per acre. Thirty thousand 



white pine will be planted with Indian labour in the spring of 1956 on the treated 



area. 



Chemical Debarking 



There is a possibility in the not too distant future that hardwood pulp 

 might have a market in the Lake Huron district. Peeled wood commands a 

 better price than rough wood. It was decided to test 10 potential chemical de- 

 barking agents in some of the common tree species in the region. The trees 

 were given three treatments during the peeling season and were then examined 

 at periodic intervals thereafter. Results will not be fully evaluated until the 

 spring of 1956, 



Christmas Tree Studies 

 The Scotch pine Christmas trees which were given five degrees of 

 pruning at ten-day intervals throughout the growing season of 1954 and at 

 monthly intervals thereafter were remeasured in July 1955 following completion 

 of height growth. This experiment will not be completed until 1956. 



FISHERIES 

 Fisheries research in 1955 was mainly concerned with Great Lakes 

 fisheries problems. Work on inland waters was continued in Algonquin Park 

 and the Parry Sound district. 



Lake Superior 

 The problem of distinct populations of Superior lake trout, their dis- 

 tribution and their vulnerability to lamprey predation, were investigated in 1955. 

 Tagging and catch sampling were carried on at Rossport and Michipicoten. In 

 the latter area, estimates of the number of young trout were made, and in- 



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