Deep Sea Soundings

1857 Scientific American  
A patent has been issued to C. G. Preler, of Lonllon, for unhairing and preparing hides for tanning by the employment of fatty or greasy substances in combination with lime and soda, 01' other alkali, for the purpose of unhairing skins; also for the employment of fatty or greasy substances in combination with soda or other alkali, and the usual ma terials containing tannic acid (such as oak bark, mimosa bark, terra japonica, cutch, divi divi, sumach, &c,) for the purpose of tanning.
doi:10.1038/scientificamerican03141857-214b fatcat:mljg2a2c35ejpo6mgdifu6xnhm