VI 
LETTER OF TRANSMITTAL. 
Several members of the expedition not engaged upon paleontological 
work have made collections of interesting specimens, evincing a hearty 
co-operation in this as well as other allied branches of the survey. 
The whole number of specimens have become the property of the War 
Department, and will be carefully preserved. 
The plates illustrating the invertebrate fossils were drawn by Mrs. H. 
M. Martin, of Albany, N. Y., and engraved and printed by Julius Bien, of 
New York City. The vertebrate-fossil plates have been prepared from the 
natural objects, engraved and printed by Messrs. Thomas Sinclair & Son, 
of Philadelphia. 
A merited recognition is hereby tendered to all those who have con¬ 
tributed to the results as shown by this report. 
Very respectfully, your obedient servant. 
Geo,. M. Wheeler, 
Lieutenant of Engineers, in charge. 
Brig. Gen. A. A. Humphreys, 
Chief of Engineers, United States Army. 
