Twisden, John Francis · London, Longmans, Green, and Co. · leaf 256
as to linethree sides of it as indicated. The original formof this piece of leather is a circle with a circularhole cut in the middle, but after it is squeezedinto its place, it takes the form shown by kk,which represents half of it. It will be observedthat the collar is one continuous pece of…
Mechanics, Analytic
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