466 BULLETIN 109, UNITED STATES NATIONAL MUSEUM. 



upon iron ores, meteoric masses, and greensand. The report ends 

 with a list of reptiles and fresh-water mollusks. 



The eighth report, 1845, is short and discusses proposed routes 

 for the Nashville and Chattanooga Railroad, especially with refer- 

 ence to the mineral resources of the country traversed. 



The ninth report, 1848 (39 pages), describes Jefferson County, the 

 zinc ores of the State, reduction of zinc ores, furnaces, and tlie 

 manufacture of brass, concluding witli analyses of zinc ores, iron 

 ores, coal, and limestone. 



A tenth report, according to Prof. L. C. Glenn,' was presented to 

 the house on January 12, 1850, and 75 copies ordered printed. No 

 regular edition was ever published, nor can the original manuscript 

 or any of the printed copies now be found. 



In addition to the above. Doctor Troost prepared a work on the 

 crinoids of the State. He took great interest in the study of these 

 fossils, secured a valuable and interesting collection of them, and 

 added much to our knowledge of the group. He described many 

 species. His manuscript, with the species old and new described 

 and illustrated in it, was in 1851 put in the hands of Prof. James 

 Hall for revision and publication. For some reason it was never 

 put to press until after the death of Hall, when it was revised and 

 published hy the United States National Museum. 



Expenses. — There are no data available regarding expenses nor 

 publications other than those given above. Nine years at $500 would 

 place the total cost at $4,500. 



SECOND SURVEY UNDER JAMES M. SAFEORD, 1854-1900. 



In 1848 Prof. James M. Safford, then fresh from his studies at 

 Yale University, entered upon his duties as professor of chemistry 

 and geology in Cumberland University at Lebanon, Tennessee. He 

 soon discovered that the formations and structural geology of mid- 

 dle Tennessee had not been satisfactorily made out and that all 

 maps relating thereto were very general and of little use. As a 

 teacher impressed with the necessity of having some proper Imowl- 

 edge of the geology of the area around him, he emploj-ed his spare 

 time in exploring the country, tracing out the formations, and col- 

 lecting fossils and minerals. Vacations were given up to the work, 

 excursions of from 100 to 500 miles being accomplished, often on 

 foot. For this work no compensation was received from the State. 



A part, of the fruit of this labor was the publication in the Amei'i- 

 can Journal of Science (vol. 12, 1851), of a m.ap of the unique 

 Silurian Basin of Middle Tennessee, with 10 pages of text, describ- 



lAmerican Geologist, vol. 35, 1905, p. 88. 



