170 University Geological Survey of Kansas. 
with tests on the strength of the material, as is shown by its 
ability to withstand both tensile and crushing strains. Practical 
experiments should also be made, and the behavior of different 
classes of material when used upon the wall or in making of 
ornaments can be studied with advantage. 
In conclusion, the author takes pleasure in acknowledging 
the special facilities placed at his disposal by the Acme Cement 
Plaster Company, the Dillon Cement Plaster Company, the Sa- 
lina Cement Plaster Company, and other manufacturers and 
dealers, both in this state and elsewhere. 
