The beetle was easily made, but the combs cost much trouble.

I filed large nails till they were round and pointed, I fixed them, slightly inclined, at equal distances, in a sheet of tin, and raised the edge like a box; I then poured melted lead between the nails and the edge, to fix them more firmly.

I nailed this on a board, and the machine was fit for use, and my wife was all anxiety to begin her manufacture.
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