Page:Popular Science Monthly Volume 90.djvu/518

 Teaching Students the Rudiments of Leather Making

���A student at Pratt Insti- tute learning to tan hides. He is removing the hair from a skin before placing it in the tanning vats. This is a tedious task

��Photos © Press Illustrating Serv.

��Handling the hides in the bark tan vats. The hides are allowed to soak in the strong solution for a specified time, after which they are removed in the manner shown

���A class of students removing the stock from the coloring drum. All hair is removed before the stock is put in the drum. The machinery used in the process is the most modern

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