Maryland Geological Survey 55 



RiES, H. Report on the Clays of Maryland. 

 Md. Geol. Surv., vol. iv, 1902, pp. 205-505, pis. xix-lxix. 



Shattuck, G. B. The Geology of the Coastal Plain Formations. 



Md. Geol. Surv. Cecil County, 1902, with geological map, pp. 149-194, figs. 

 8-11, pis. xii-xvi. 



1903 



Berry, Edward W. Aralia in American Paleobotany. 



Bot. Gaz., vol. xxxvi, 1903, pp. 421-428. 



. The American Species referred to Thinnfeldia. 



Bull. Torrey Bot. Club, vol. xxx, 1903, pp. 438-445. 



1905 



BiBBiNS^ Arthur. Stratigraphical position and General jSTature of 

 the Maryland Cycads. 



In. Ward, Mon. U. S. Geol. Surv., vol. xlviii, 1905, pp. 411-415. 



1906 

 Clark, Wm. Bullock, and Mathews, Edward B. Report on the 

 Physical Features of Maryland (with map). 



Maryland Geol. Survey, Special Publication, vol. vi, pt. i, Baltimore, 1906. 



Miller^ Benjamin LeRoy. Dover Folio. Explanatory Sheets. 

 U. S. Geol. Survey, Geol. Atlas, folio No. 137, Washington, 1906. 



Ward, Lester F. Status of the Mesozoic floras of the United States. 

 Second paper, by Lester F. Ward, with the collaboration of Wm. M. 

 Fontaine, Arthur Bibbins, and G. R. Wieland. Washington, Gov't print. 



off. (1905), 1906. 



2 V. cxix pi. (incl. maps) 30i^ x 23 cm. (U. S. Geological Survey, Mono- 

 graphs, vol. xlviii). 



Contents. — pt. i. Text. — pt. ii. Plates. 



1907 

 Bibbins, Arthur Barnevelt. Additional Evidence of Tropical Cli- 

 mate on the Middle Atlantic Coast during the Lower Cretaceous. 

 (Abstract) Science (N. S.), voL xxv, 1907, pp. 297, 298. 



Shattuck, George Burbank; Miller, Benjamin LeRoy, and Bib- 

 bins, Arthur. Patuxent Folio. Explanatory Sheets. 



U. S. Geol. Survey, Geol. Atlas, folio No. 152, Washington, 1907. 



