

58 THE PHYSICAL FEATURES OF CECIL COUNTY 



1890. 



Chester, F. D. The Gabbros and Associated Eocks in Delaware. 



Bull. U. S. Geol. Surv. No. 59, Washington, 1890. 



House Misc. Doc, 51st Cong., 1st sess., vol. xxxii, No. 244. 



(Abst.) Amer. Nat., vol. xxv, p. 1002. 



Day, D. T. Structural Material. 



Mineral Kesources U. S., 1888, Washington, 1890. 



Macfarlane, J. E. An American Geological Eailway Guide. 



Appleton, 1890. 2nd edit. 8vo, 426 pp. 



Uhler, P. E. Notes on Maryland. 



Macfarlane's An American Geol. R. R. Guide, 2nd edit., Appleton, 1890. 



1891. 

 Darton, N. H. Mesozoic and Cenozoic Formations of Eastern Vir- 

 ginia and Maryland. 



Bull. Geol. Soc. Amer., vol. ii, 1891, pp. 431-450, map, sections. 

 (Abst.) Amer. Geol., vol. vii, 1891, p. 185. 

 Amer. Nat., vol. xxv, 1891, p. 658. 



Lindenkohl, A. Notes on the submarine channel of the Hudson 

 river and other evidences of postglacial subsidence of the middle Atlan- 

 tic coast region. 



Amer. Jour. Sci., 3rd ser., vol. xli, 1891, pp. 489-499, 18 plates. 



McGee, W J The Lafayette Formation. 



12th Ann. Kept, U. S. Geol. Surv., 1890-91, Washington, 1891, pp. 347-521. 



Merrill, G. P. Stones for Building and Decoration. Wiley, 

 New York, 1891. 8vo. 453 pp. 



1892. 



Clark, Wm. B. The Surface Configuration of Maryland. 

 Monthly Kept, Md. State Weather Service, vol. ii, 1892, pp. 85-89. 

 Dana, E. S. Manual of Mineralogy. Wiley, New York, 1892. 

 1134 pp. 



Darton, N. H. Physiography of the region [Baltimore and vicin- 

 ity] and Geology of the Sedimentary Eocks. 



Guide to Baltimore with an account of the Geology of its Environs, and 

 three maps. 



Baltimore, 1892, pp. 123-139. 



Scharf, J. Thomas. The Natural Eesources and advantages of 

 Maryland, being a complete description of all of the counties of the 

 State and the City of Baltimore. Annapolis, 1892. 



Uhler, P. R. Albirupean Studies. 

 Trans. Md. Acad. Sci., vol. i, 1890-92, pp. 185-202. 



