. Canadian forest industries July-December 1920. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. December 15, 1920 CANADA LUMBERMAN ANt) WOODWORKER Studying the Forests of Ontario from the Air Feasibility of Using Aerial Craft in Survey Work Amply Demonstrated— How Great Stretches May be Covered Rapidly and Completely By Roland D. Craig, , Ottawa, Commission of Conservation. The aeroplane has at last come in answer to the prayers of the timber cruiser. Few of us, who have bucked the brush with packs on our backs have not longed for wings that we
. Canadian forest industries July-December 1920. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. December 15, 1920 CANADA LUMBERMAN ANt) WOODWORKER Studying the Forests of Ontario from the Air Feasibility of Using Aerial Craft in Survey Work Amply Demonstrated— How Great Stretches May be Covered Rapidly and Completely By Roland D. Craig, , Ottawa, Commission of Conservation. The aeroplane has at last come in answer to the prayers of the timber cruiser. Few of us, who have bucked the brush with packs on our backs have not longed for wings that we might clear the im- peding rocks, muskegs and windfalls and also that we might obtain a bird's-eye-view of the lay of the land. I might also add that some of us had little hope of acquiring them while vSre were on that job. The old saying that one cannot see the forest for the trees is often true, but when flying over a, tract one can see it spread out before him like a map the lakes, muskegs, burned areas and green timber and can record these observations with greater accuracy than is pos- sible from ground reconnaissance without a very intensive survey. In estimating timber two factors are necessary, first, the areas of the waste land and of the various types of forest, and second, the average stand of timber on each type. The areas can be secured from an aerial survey more accurately and in a small fraction of the time required by a ground survey. The composition of the stand and the relative quantities of timber can be judged within certain limits by an experienced observer, but, knowing the location and extent of the timbered areas, the estimator can eliminate the waste areas and confine his cruising to the productive lands and with a comparatively small amount of ground work can secure definite information as to quan- tities of timber. Transportation is an important item in conduclfmg a forest survey. It frequently costs as much and takes as much time to get a survey p
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforestsandforestry
