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178 direction is S. 76 E. The question then arises: Is this mound the one that Mr. Lewis surveyed? Nothing could be better evidence that it is than the very egregious error Mr. Lewis made concerning the area contained within his triangular embankment. He affirms that the area of Fort Necessity was fifty square rods. Now take the line of B E for the third side of the triangle and extend it to F where it would meet the continuation of side A C. That triangle contains almost exactly 50 square rods or one-third of an acre! The natural supposition must be that some one had surveyed the triangle A F B and computed its area correctly as about fifty square rods. The mere recording of this area is sufficient evidence that the triangle A F B had been surveyed in 1816, and this is sufficient proof that mound B E stood just as it stands today and was considered in Mr. Lewis's day as one of the embankments of Fort Necessity.

Now, why did Mr. Lewis ignore the embankment B E and the triangle A F B which contained these fifty square rods he gave as the area of Fort Necessity? For