12 I>ETTE1I OF TItANSailTTAL. 



The whole number of specimens have become the property, of the War 

 Department, and Avill be carefully preserved. | 



The plates illustrating the invertebrate fossils were drawn by Mrs. H. 

 M. Martin, of Albany, N. Y., and C. K. Worthen, of Warsaw, 111., 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 Siiiclair & 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, youi- obedient servant, 



Geo. M. Wheeler, 

 Lieutenant of Enr/ineers, in charge. 



Brig. Gen. A. A. Humphreys, 



Chief of Engineers, United States Army. 



