142 REPORT OF THE No. 3 



automatic recorder in the plane. Automatic ground recorders have now been 

 set up at Bear Island, Emerald Lake, Skead, Capreol, Crystal Falls, Burwash 

 and Lake Penage. The assistance of Mr. A. W. McCallum, Pathologist of the 

 Dominion Department of Agriculture, and Dr. George Duff, of the University 

 of Toronto, was obtained in studying pathological effects on trees and the deter- 

 ioration of killed material. Meteorological effects were studied b\' the Dominion 

 Meteorological Service. A secondary laboratory site was selected near Thessalon 

 for controlled experiments in fumigation to be made in 1947. 



Forest Genetics: 



The services of a competent geneticist. Dr. C. C. Heimburger, were obtained 

 in August of 1946. Dr. Heimburger will proceed with his work on the selection 

 of a blister rust resistant strain of wdiite pine and an aspen which will combine 

 good growth, disease resistance and good pulping qualities. He has also started 

 the establishment of an arboretum at Maple of all declimatized trees. 



Artificial Reforestation by Seeding: 



This project dealing mainh' with the use of coated seed on burned areas 

 commenced in the fall of 1946 and several burned areas wxre sown experimentalh' 

 b}^ hand and from an airplane. Seeds were coated at the Maple station using a 

 combination of insecticides, rodent repellents and fertilizers. 



A stud\' of the seeding habits of pines, particularly red pine, was started 

 this year under the direction of Dr. George Duff, of the University of Toronto, 

 assisted by two undergraduates. This work is necessary because little is known 

 of the seeding habits of trees or why their seed production is sporadic. It is 

 thought that as a result of this work it may be possible finally to produce regular 

 cone crops from plantation pine at an economic cost. This will reduce the uncer- 

 tainty now attending naturally grown supplies of seed. 



Game and Fish: 



The main object of these studies is to increase the game and fish resources 

 of the Province. Fisheries surveys were carried out during this season under the 

 direction of Dr. W. J. K. Harkness and Dr. F. E. J. Fry in Algonquin, Sibley 

 and Quetico Parks and in Lake Erie and Lake Ontario. The principal studies 

 were directed towards the effect of coarse fish on game and commercial species 

 and the improvement resulting from a balanced removal of all species or, in 

 some cases, a heavy removal of coarse fish and restocking with desirable species. 



Studies of habitat relationships such as water temperatures and food content 

 in relation to fish numbers and health were continued at the Fish Laborator\ 

 near Whitney. Studies of planting Atlantic salmon were made in Duffin's Creek 

 near Pickering, Ontario. 



Wildlife studies were carried out under the direction of Dr. C. H. D. Clarke, 

 assisted by 8 students, in Algonquin Park. A wilderness area of 30.5 sq. miles 

 for the study of wildlife under natural conditions was established in Algonquin 

 Park in 1944 and work was continued in this area. The principal study was 

 directed towards obtaining a method of assessing animal populations that can 

 be applied in forest and game management. The problem of animal diseases 

 also received attention. 



