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.