Chapter III: Part V: , Leather Testing and the Theory of Tanning--Testing and

Analysis of Leather: Physical Testing of Tanned Leather; Chemical
Analysis--The Theory of Tanning and the other Operations of the
Leather and Skin Industry: Theory of Soaking; Theory of Unhairing;
Theory of Swelling; Theory of Handling; Theory of Tanning; Theory of
the Action of Tannin on the Skin; Theory of Hungary Leather Making;
Theory of Tawing; Theory of Chamoy Leather Making; Theory of Mineral
Tanning.