DEPARTMENT OF LANDS AND FORESTS FOR 1931 137 



III. Report of the Liaison Officer 



During the field season of 1931 this section of the Forestry Department 

 carried out operations which may be conveniently grouped under two headings, 

 (a) Aerial Survey, and (2) Radio Communication. 



1. Aerial Survey: 



This branch of the work may be further separated into: 



(a) Timber Type Classification. 



(b) Aerial Photography. 



(c) Ground Control. 



(a) Timber Type Classifiation by Aerial sketching was carried on during the 

 early part of the summer in continuation of the Departmental survey of the 

 Ogoki watershed. During the season an additional twelve hundred square 

 miles was examined, bringing the total area covered to 5,200 square miles. 

 Approximately 3,000 square miles is still to be examined. 



The comparatively small area completed this season is due to diversion of 

 personnel to road construction surveys and also to unfavourable fire hazard 

 and weather conditions. Fifty hours only were used on this project. As in 

 the preceding year, this classification was based on a skeleton topographic map 

 specially prepared for the work from Departmental oblique photos. 



(b) Aerial Photography. Three main photographic operations were carried 

 out: 



(1) From Sand Lake, Algoma District. 



(2) From Stoco Lake, Haliburton District. 



(3) Special Survey for Provincial Mines Department. 



(1) The operation from Sand Lake was undertaken partly to provide a 

 map for road location to be used for this purpose by the Northern Development 

 Department. Information obtained will also be used to provide Forest Type 

 Maps in the districts concerned. 



The area covered by this operation included: 



(a) A block between Michipicoten Harbour and Batchawana Bay extending 

 inland to the Algoma Central Railway. 



(b) A strip four miles wide from Michipicoten Harbour to White Lake 

 via Magpie River, Pokei Lake, Depew and White River. 



(c) A strip four miles wide from White Lake to Hornepayne. 



(b) A strip four miles wide from White Lake to Rous Lake via C.P.R. 

 right-of-way. 



(e) A block from Heron Bay to Schreiber to an average depth of 10 miles. 



(f) A block from Schreiber to Rossport (joining work of 1929) to an 

 average depth of six miles. 



(2) The operation from Stoco Lake was undertaken to provide type 

 boundaries and a general forest classification in the Eastern and Kawartha 

 Forest Reserves. The area covered included portions of the following townships: 

 Brougham, Palmerston, Clarendon, Griffith, Abinger, Ashby, Mayo, and Burleigh 

 and all of Canonto North, Canonto South, Miller, Matawatchan, Anglesea, 

 Effingham, Methuen and Harvey. 



