Dept. Bull. 1500. U. S. Dept. of Agriculture 
Plate 1 
Glue-Mixing Equipment 
A.— Central mixing station for animal glue. Temperature control is maintained in both the 
mixing and melting tanks and in the storage containers. Three different solutions of the same 
dry glue are used in this plant for different classes of work, and only enough glue is melted to last 
for two hours. 
B.— Small vegetable-glue mixer used in laboratory work. The same type of mixer, without 
the water jacket_and with modified stirring mechanism, is used for casein glue. 
C— Dough-type mixer for casein glue. 
