Klem—The History of Science in St. Louis. 101 
hope that, in some years from this, there will be a definite clearing 
up of this point.” 
Nicollet was the first explorer who made much use of 
the barometer for obtaining the elevation of our great 
interior country above sea level. He was a most industri- 
ous, indefatigable, earnest, and accurate explorer, and 
the map which embodied the results of his labors was, in 
the opinion of General G. K. Warren, ‘‘one of the great- 
est contributions ever made to American geography.’’ 
In 1839 Dr. Adolph Wislizenus®® of St. Louis left on 
a scientific tour with the’ annual caravan of the fur 
traders. Wislizenus traveled up the Kansas river to 
the Platte, along the Platte to Fort Laramie, over the 
Black Hills and the Wind River Mountains to the Green 
river rendezvous, and finally to Fort Hall on the Snake 
river. Upon his return to St. Louis he published the re- 
sults of this journey under the title of ‘‘Hin Ausflug nach 
den Felsen-Gebirgen im Jahre 1839,’’ an English trans- 
lation of which, prepared by a son of Dr. Wislizenus, was 
published by the Missouri Historical Society two years 
ago. 
In 1842 John C. Frémont,?! through the efforts of Sen- 
ator Thomas H. Benton of Missouri, was selected by 
20 Memoir of a tour to northern Mexico connected with es Doni- 
Phan’s age et in 1846 and 1847. By A. Wislizenus, M. D. 48. 
Korner, Gustav. Das deutsche Element in den vechaistax Staaten 
von Nanicalestia 1818-1848. 333-337. 1880. ‘ 
In memoriam Adolph Wislizenus, M. D. Trans. Acad. Sci. St. Louis. 
5: Xxxvii-xxxviii. 1889. 
Engelmann, G. J. Frederick Adolphus Wislizenus. Trans. Acad. 
Sci. St. Louis. 5: 464-468. 1892. 
Spaulding, Perley. A biographical history of botany at St. Louis, 
issouri. Pop. Sci. Month. 1909: 244-246. 
Wislizenus, oe. A. A journey to the Rocky mountains in the year 
1839. By F. A. Wislizenus, M. D. Translated from the German with 
a sketch of the author’s life. 1912. 
*1 Bigelow, John. Memoir of the life and public service of John 
Charles Frémont. 1856. 
Upham, Charles Wentworth. Life, explorations, and public services 
of John Charles Frémont. 1856. 
