serve water in fish-holding tanks, by means of special filters and close temperature 

 controls. 



Tubed Seedling Filler 



A project of the forestry research section has progressed to a point where 

 large-scale field tests are justified in planting tree seeds in special tubes. The 

 construction of a machine has been started to fill the tubes with soil and plant the 

 seeds in one quick operation. The development of the most suitable type of tube 

 is one part of the problem. 



Snowmobile Modification 



A snowmobile which was originally built by the section is being modified. 

 TTie machine has been found to be the best means by which fish and game over- 

 seers can inspect fish huts and other winter operations on Lake Simcoe. 



Jet-drive Steel Trapnet Boat 



A 24-foot steel trapnet boat with a jet-drive unit powered by a 6-cylinder 

 gasoline engine was built in the fall of 1962 for use on the Lake-of-the-Woods. 



Research Vessels 



Among the many other projects, diesel engine installations and modifications 

 were made on two research boats. 



INFRARED FOREST FIRE DETECTION EXPERIMENT 



The Research Branch was instructed in 1961 to make a study of the feasibility 

 of using infrared heat sensory equipment in the detection of forest fires, when they 

 actually start, "to solve a problem that should make for more efficient forest 

 protection". The objective is to detect fires sooner than by present visual means. 



Small forest fires which have just started do not usually put up sufficient 

 smoke for visual detection, either from lookout towers or aircraft. They burn, and 

 increase in size, for some time before they are seen. 



Newly started fires in the forest cannot be seen under the extensive smoke 

 pall of large going fires, nor can they be seen at night. 



The Research Branch designed and conducted an experiment in 1962, in co- 

 operation with the Forest Protection Branch. The Special Products and Applied 

 Research Division of De Havilland Aircraft Ltd. was engaged, under contract, to 

 assist the Department in the mechanical and electronic aspects of the experiment 

 and the reduction of the measurement data, as both called for specialized skills 

 and knowledge. 



The infrared equipment used consisted of a TIA radiometer and fly-over 

 recorder, loaned to the Department by the Defence Research Board of 

 Canada/CARDE. 



No night flying was undertaken or tests made through smoke haze, as this 

 particular experiment was dependent on a fly-over recorder which photographed 

 both the ground below the Beaver aircraft used and the infrared signals within the 

 field of view of the radiometer installed. 



The test areas were selected in the Sault Ste. Marie and Lake Simcoe Districts. 

 Fires of uniform size and intensity were spaced in various densities of coniferous 



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