Bird-Stuffing. Bird-stuffers, in preparing and skinning a bird or other animal ready for preserving, use burnt alum to rub over any wet or bloody part, that it may not soil the rest. In this case its peculiar astringency assists in tanning or rather hardening the skin, so that it is not so liable to contract mouldiness, nor to become the prey of the moth and other destructive insects. All that is necessary is to put some powdered alum in a ladle or fire-shovel over the fire. It will soon melt, boil, and swell up. It is to be kept on the fire till all the water has evaporated, and until it becomes so brittle as to break easily into a fine powder.