. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIN 463, U. S. DEPARTMENT OF AGRICULTURE. is not realized that they can not be accomplished except by means of a careful survey, and that such surveys can be made only by experi- enced men who have been trained especially for such work. Farmers and business men generally are inclined to underestimate the amount of skill required to make a road survey properly and their influence has been responsible in the past for much bungling and for uneco- nomical road work for which they have had to pay in heavy taxes. Figu
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIN 463, U. S. DEPARTMENT OF AGRICULTURE. is not realized that they can not be accomplished except by means of a careful survey, and that such surveys can be made only by experi- enced men who have been trained especially for such work. Farmers and business men generally are inclined to underestimate the amount of skill required to make a road survey properly and their influence has been responsible in the past for much bungling and for uneco- nomical road work for which they have had to pay in heavy taxes. Figure 1 illustrates an error which is made sometimes by inexpe- rienced persons in grading a road without first having surveyed and planned the work. In this figure, which is an actual profile of an ex- isting road, line A shows' the original ground surface, line B shows the grade to which the road was actually constructed, and the dotted line (C) shows a grade line which, if it had been followed, not only. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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