Part V., =leather Testing and the Theory of Tanning=--Chapter I.,

Testing and Analysis of Leather: I., Physical Testing of Tanned Leather: II., Chemical Analysis--Chapter II., The Theory of Tanning and the other Operations of the Leather and Skin Industry: I., Theory of Soaking; II., Theory of Unhairing; III., Theory of Swelling; IV., Theory of Handling; V., Theory of Tanning; VI., Theory of the Action of Tannin on the Skin; VII., Theory of Hungary Leather Making; VIII., Theory of Tawing; IX., Theory of Chamoy Leather Making; X., Theory of Mineral Tanning.