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4

A report similar to the above dated 20th of last December was presented to ex-mayor Grace chairman of the Committee with the additional request to be furnished with written instructions for our guidance. A copy of the reply of the chairman dated December 27th, is annexed to this paper.

What the examining engineers desire to impress upon all Concerned in this investigation, is that the calculations for the quantities of materials used in the bridge structure will lead not to exact but only to approximate results with the degree of approximation unknown, and that a necessity now exists to decide whether such approximate results will meet the expectations of those ordering the investigation, and whether they will be worth the