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POPULAR SCIENCE MONTHLY. 



he was appointed by David Dale Owen to an assistant's position 

 upon the Geological Survey of Iowa, Wisconsin, and Minnesota. In 

 1850 he was Dr. John Evans's assistant in a geological reconnois- 

 sance of Oregon, and spent the greater part of two years in the field. 

 In 1852 he returned to Louisville to work out his report, and to assist 

 his brother in preparing for publication the paleontological results 

 of the Marcy Red River Expedition. In 1853 Dr. Shumard re- 

 moved to St. Louis to serve as an assistant upon the State Geological 

 Survey organized under Prof. G. C. Swallow. In 1856, appointed 

 State Geologist of Texas, he made a study of the remarkably com- 

 plete series of rocks occurring in the eastern and central part of that 

 State. The war interfered with his work, which was never resumed. 

 Returning to St. Louis, he died there, April 14, 1869. 



Prof. George Clinton Swallow forms one of the striking features 

 in the early history of American geology. On one occasion Prof. 

 A. C. Ramsay, the eminent director of the Geological Survey of 



G. C. Swallow. 



Peof. Charles V. Riley. 



Great Britain, said : " I will say that the names of Dana and Hall, 

 and Hitchcock and Rogers and Silliman and Swallow, and your 

 other scientific men, are as familiar in our mouths as household 

 words." Born on a farm, at Buckfield, Maine, in 1817, George 

 C. Swallow had no great opportunity for education. With ambition 

 and purpose, however, he pushed his way, and in 1843 graduated 

 from Bowdoin College. His interest was chiefly in chemistry in 

 its practical application to agriculture. Immediately on graduation 



