Dr. F. H. Snow, Chancellor of the University of Kansas: 
S1r—I have the honor to submit to you herewith for your approval 
a special report on Gypsum and Gypsum Cement Plasters, which will 
constitute Volume V of the reports of the University Geological Sur- 
vey of Kansas. This report has been prepared principally by Prof. 
G. P. Grimsley, to whose paper Prof. E. H. 8. Bailey, of the Univer- 
sity, has added a chapter on the Chemistry of Gypsum and Gypsum 
Cement Plasters. | 
It was more than three years ago that Professor Grimsley was in- 
vited to make a special study of the Kansas gypsum under the gen- 
eral supervision of the Department of Physical Geology and Mineral- 
ogy of the University of Kansas. For three successive summers he 
devoted many weeks to field-work, examining in every way known to 
the geologist the various localities connected with the subject in hand. 
Tam sure that the public in general will agree with me that it was a fortu- 
nate event in the history of the material development of our state which 
brought him in touch with our Geological Survey. The material 
used by Professor Bailey in the various analyses reported on by him 
was largely gathered by Professor Grimsley, but a part of the chem- 
ical work was done by Professor Bailey entirely independent; in 
fact, portions of it were accomplished before the University Geolog- 
ical Survey was organized. 
My own connection with the report has been general rather than 
specific, being that of an adviser rather than a worker, and I have 
only occasionally made additions or modifications to the paper sub- 
mitted by Professor Grimsley. However, I took immediate charge 
of the preparation of the illustrations, the drawings for which were 
made by Mrs. Haworth. 
3 Yours most respectfully, 
Erasmus HAwortuH. 
DEPARTMENT OF PHYSICAL GEOLOGY AND MINERALOGY, 
UNIVERSITY OF KANSAS, December 15, 1898. 
