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<br />INTRODUCTION
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<br />5
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<br />combating a tree beetle infestation that is threatening rapid
<br />destruction of the Black Hills pine. It is very evident what the
<br />success or failure of this program might mean to the top soil
<br />miles below this watershed. Again such a remote program as
<br />the Commodity Credit Corporation fann storage of grain might
<br />protect the top soil by encouraging good conservation farm prac-
<br />tices by the security of grain in reserve, Or to say it backward,
<br />the possible extreme need for food supplies and lack of sur-
<br />plus would surely lead to the over mining of the soiL The third
<br />illustration is still more remote. There has been some call for
<br />a machinery efficiency use program, the utilization of avail-
<br />able machinery such as combines, sprayers, drills, etc. over a
<br />more or less large area during the entire season. This program
<br />is efficiency to the nth degree, although it often includes indi-
<br />rect subsidies. Such programs accelerated by improved trans-
<br />portation and monetary reward for efficiency have started a
<br />trend, We have something new - the fly-by-night transient
<br />farmer, a possible menace to conservation of the son.
<br />
<br />This book is not an effort to compile a text for use in high
<br />schools; it is but an aid to those of longer training and ability
<br />who have that responsibility. It is not a technical treatise on
<br />cons'ervation, such a treatise should be compiled by a brilliant
<br />writer, who at the same time evaluates and classifies all allied,
<br />special texts and credits each special reference, including com-
<br />plete bibliographical reference. Do not then expect that this
<br />book will throw a search beam of incandescent light on the
<br />entire subject and problems of conservation. Its writer can be
<br />compared rather toa cowman in the darkness of overtime ef-
<br />fort, carrying but a kerosene lantern with its five foot beam
<br />of light limited in area but very adequate for the closest double
<br />check. Picture this cowman as he gets ready for daylight and
<br />the next day; repairing a machine here or a leaky trough there,
<br />counting hoof marks at the breached fence, repairing as far as
<br />possible yesterday's accidents, breakdowns and mistakes and
<br />thus getting ready for tomorrow's urgent needs and efforts.
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