适用于牛和马的所有生皮和兽皮，但不适用于水牛皮。简要描述保存过程缺陷的性质和起源。给出了通过盐和化学产品的均质混合物进行脱水的应用规则。

Applies to all raw and skins of cattle and horses but not to buffalo hides. Short description of nature and origin of preserving process defects. Gives rules of application for dehydration by means of a homogenous mixture of salt and chemical products.