456 



REPORT OF NATIONAL MUSEUM, 1904. 



Fig. 62.— George Gibbs. 



George Gibbs accompanied a party under the command of Capt. 

 George B. McClellan and made reports on the country lying on Shoal- 

 water Ba} r and Puget Sound, and also in the central part of what was 



then the Territory of Wash- 

 SnSCaSSi^"* ington. His published notes 

 contained little of geological 

 interest. Gibbs, it should be stated, while 

 active in scientific matters, did little work 

 along the broad lines of geology. His bib- 

 liography consists, in addition to the above, 

 of throe brief notes, altogether comprising 

 less than a printed page. He thought to 

 have discovered that the paving blocks — 

 pebbles — on Waverly Place in New York 

 City had through the weight of traffic yielded 

 as if plastic, so that the concavity of one 

 fitted into a corresponding convexity in its 

 neighbor. He also called attention to the 

 "glades' 1 in Oakland, Allegany County, Maryland, which he believed 

 to have been the seats of ancient glaciers. 



In this connection mention should be made of the survey by Swallow 

 of that portion of the line built under State auspices 



Swallow's Survey of *■ „ _ , , , E, 



the southwest and extending from St. Louis westward to the State 



Branch of the Pacific , 



Railroad in Missouri, line and known as the Southwest Branch. Ine report 

 of this survey comprised, all told, less than one hundred 

 pages, and is of interest mainly for the colored geological map of the 

 region traversed. It dealt, naturally, mainly with economic questions, 

 as the distribution of the ores of lead, zinc, 

 and copper and the character of the soil. 



In 1854 the general assembly of Tennessee 

 passed an act creating for a second time the 

 office of geologist and mineralogist of the 

 State. J. M. Safford, then holding the chair 

 of chemistry, geology, and natural history 

 in the Cumberland Univer- 

 T^n r e s ; e e W r854 n sity at Lebanon, Tennessee, 

 was appointed to the posi- 

 tion, continuing to serve until the outbreak 

 of the civil war, when the work was aban- 

 doned. During this time he published two 

 biennial reports, the first in 1856 compris- 

 ing 164 pages, and the second in 1857 com- 

 prising but 11 pages. A final volume on the geology of Tennessee, 

 comprising 550 pages with 7 plates of fossils, appeared in 1869 (see 

 p. 534). 



Fig. 63.— James Merrill Safford, 



