Report of the Department of Lands and Forests for fiscal year ending March 31, 1950 Page 132 



B. South-Central Region 



1. Study of relative growth and quality of the white, red, jack and scotch pines 

 previously planted in a number of localities in the region. 



2. Determination of the advisability of planting pine in pure stands, or in association 

 with hardwoods; examination of stands of various combinations. 



3. An attempt to determine on what sites white pine is most likely to succeed; 

 examination of the sites on which the best white pine stands have occurred. 



4. A study of natural white pine regeneration following cutting; examination of per- 

 manent sample plots in area south of North Bay. 



5. Determination of approximate boundaries of the original white pine stands in the 

 region. 



6. Study of the suitability of seeds and seedlings from southern sources, in northern 

 localities. 



7. Assistance in study of Algonquin Park watersheds for fisheries research; forest 

 cover typing and stand tables. 



8. Assistance in development of a new statistical approach to timber cruising; tally 

 of trees on 80-acre plot. 



Mensuration 



Volume Tables: The purpose of this project, commenced in 1948 under M. 

 Ardenne, is to construct hardwood tables for such species as maple, beech, elm and 

 oak, growing in southwestern Ontario. The tables will be useful mainly to woodlot 

 owners in this area, but it is possible that they may be applicable to the whole of the 

 Ottawa-Huron area. 



Field work during 1949 was a continuation of that of 1948. Adequate data 

 were obtained for the construction of tables for sugar maple from 1,130 trees, and for 

 beech from 530 trees measured. Data collected on elm and other species were insuffi- 

 cient for table preparation, due to the scarcity of these species in the area. It is 

 expected, however, that adequate data may be obtainable subsequently on white elm 

 and soft maple. 



Other features of tree growth and tree volume were investigated in the course of the 

 volume table work. 



Soils 



The soils research program, under G. A. Hills, has two general objectives: 



1. To classify and map the whole forest land area of Ontario on the basis of its 

 natural characteristics, in respect to topography, geology, climate and soil. 



2. To evaluate the various types of land according to their capacity to produce forest 

 or agricultural crops. 



The program commenced in 1944. was continued during the past year both in the field, 

 and at the Southern Research Station, Maple. 



Field Work. In the summer of 1949 field parties, working in the northwestern 

 portion of the province, filled in the gaps of information required to complete an 

 agricultural use capability map of Northern Ontario. 



