… horn-cores, unworked, defatted, simply prepared (but not cut to shape), treated with acid or degelatinised; powder …
Explanatory notes
… horn-cores, unworked, defatted, simply prepared (but not cut to shape), treated with acid or degelatinised; powder … various processes). (2) Bones, simply prepared (but not cut to shape) , i.e., not having undergone processes … beyond simple sawing for the removal of superfluous parts, cutting (crosswise or lengthwise), sometimes followed by …