MARYLAND GEOLOGICAL SURVEY 37 



1858 



ROGERS, H. D. The Geology of Pennsylvania. 2 vols. (Vol. II in 

 two parts) and maps. 4to. Phila., 1858. 



This work containing frequent references to the Maryland extension of formations 

 studied in Pennsylvania, besides giving the typical sections, terms, fossils, etc. 



1860 . .. 



TYSON, P. T. First Eeport of Philip T. Tyson, State Agricultural 

 Chemist, to the House of Delegates of Maryland. Jan., 1860. 8vo. 

 145 pp. Annapolis, 1860. Maps. 



Md. Sen. Doc. (E). Md. House Doc. (C). 



Deals with the rocks and soils, fertilizers, etc., and explains the accompanying 

 geological map. 



1875 



FONTAINE, WM. M. On some Points in the Geology of the Blue Ridge 



in Virginia. 



Amer. Jour. Sci., 3d ser., vol. ix, 1875, pp. 14^22, 93-101. (Abst.) Geol. Record, 

 1875, London, 1877, p. 119. 



Includes a few notes on Catoctin Mt., and the argillites of Point of Rocks and 

 Harper's Ferry, pp. 15-17. The first paper deals with some of the general problems 

 involved in a study of the Blue Ridge, and the illustrations are mostly taken from 

 that portion of the range, near the Potomac River. The second paper deals with 

 the area about Lynchburg and southward. 



. On the Primordial Strata of Virginia. 



Amer. Jour. Sci., 3d ser., vol. ix, 1875, pp. 361-369, 416-428, 3 figures. 



(Abst.) Geol. Record, 1875, London, 1877, p. 119. 



Refers briefly to the geology of Harper's Ferry (p. 362) and to the folds at 

 "Cement Mill" near Hancock (p. 364). Geology of the Harper's Ferry region, pp. 

 422-423. 



1876 



HUNT, T. STERRY. Geology of Eastern Pennsylvania, 

 Proc. Amer. Assoc. Adv. Sci., vol. xxv, 1876, pp. 208-212. 



Considers the Blue Ridge in Maryland to be Montalban and Huronian with no 

 Laurentian. 



1879 



FRAZER, PERSIFOR, JR. Fossil (?) Forms in the Quartzose Rocks of 

 the Lower Susquehanna, with plate. (Read April 4, 1879.) 



Proc. Amer. Phil. Soc., vol. xviii, 1880, pp. 277-279. 



Deals with some curious indeterminate forms from Frazier's Point, Cecil County. 

 Letters by Whitfleld and Hall. 



