The Prairie Traveler by Randolph Barnes Marcy, Captain, U.S.A.

Diagram for Measurements.

The line AB (the distance to be measured) is extended upon the bank to D, from which point, after having marked it, lay off equal distances, DC and Cd; produce BC to b, making CB=Cb; then extend the line db until it intersects the prolongation of the line through CA at a. The distance between ab is equal to AB, or the width of the crossing.

Continue reading Chapter III.


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