Thomas Baines, Shifts and Expedients of Camp Life…
“ The shanks of horse-nails make very good fish hooks. These, when filed down to the proper thickness, must be laid, one by one, in a narrow groove made in a piece of hard wood, and the barb struck up with a chisel or the sloped edge of a knife. One smart, well-directed blow on the instrument usually effects this. The point is now to be filed up sharp, the wire gently heated in the fire, and twisted with pliers—or, in the absence of these, a split stick—into proper hook form, when it is to be subjected to the case-hardening process. ”
