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CinuidUtu Forestry Juunial. .Ipril, i(j20. 



A New Reference Map for Aerial 



Purposes 



(by Stuart Graham, R.A-F.) 



The fact that many lakes, rivers 

 and towns frequently bear the same 

 name has long been a source of con- 

 fusion in various parts of Canada, 

 and as the rate of transit increases, 

 this becomes more troublesome. Now 

 that aviation promises to be one of 

 the most important assets in the de- 

 velopment of the country, it is nec- 

 essary to utilize some method where- 

 by rapid and accurate reference may 



be made to any desired position or 

 point. The carrying out of aerial 

 work over the St. Maurice Valley 

 during 1919 necessitated the adop- 

 tion of such an idea, but this was 

 more of a local nature. 



For aerial photographic surveys, 

 and the reporting of forest fires, it is 

 absolutely essential that a generally 

 accepted map covering a large area 

 be utilised .and yet this map must 



