Maryland Geological Survey 51 



Marsh, 0. C. Notice of a new genus of Sauropoda and other dino- 

 saurs from the Potomac formation. 



Am. Journ. Sci., 3d ser., vol. xxxv, 1888, pp. 89-94, 9 text figs. 



Uhler, p. E. Sketch of the history of the Maryland Academy of 

 Sciences. 



Trans. Md. Acad. Sci., vol. i, 1888, pp. 7-8. 



Ward, Lester F. Evidence of the fossil plants as to the age of the 

 Potomac formations. 



Am. Journ. Sci., 3d ser., vol. xxxvi, 1888, pp. 119-131. 



1889 



Feistmantel, Ottokar. .Ueber die bis jetzt altesten dikotyledonen 

 Pflanzen der Potomac-Formation in N. America, mit brieflichen Mit- 

 theilungen von Prof. Wm. M. Fontaine. 



Sitzb. k. bohm. Ges. d. Wiss., Jahrg., 1889, vol. i, pp. 257-268. 



. Ueber die bis jetzt geologisch altesten Dikotyledonen. 



Zeitscli. deutsch. geol. Ges., Berlin, vol. xli, 1889, pp. 27-34. 



Knowlton, Frank Hall. Fossil wood and lignite of the Potomac 

 formation. 



Bull. U. S. Geol. Surv. No. 56, 1889, 72 pp., 7 pi. 



(Abstract) Amer. Assn. Adv. Sci., Cleveland, 1888, Salem, 1889, pp. 207-208. 



Am. Geol., vol. iii, 1889, pp. 99-106. 



1890 

 Fontaine, William Morris. The Potomac or Younger Mesozoic 



Flora. 



Mon. U. S. Geol. Surv., vol. xv, 1889, text, xiv, x, 377 pp.; atlas, 180 pis. 

 Reviewed, Am. Journ. Sci. (iii), vol. xl, 1890, pp. 168, 169. 



TThler, p. E. Additions to observations on the Cretaceous and Eocene 

 formations of Maryland. 



Trans. Md. Acad. Sci., vol. i, 1889-1890, pp. 45-72 



. Notes and illustrations to " Observations on the Cretaceous 



and Eocene formations of Maryland." 

 Trans. Md. Acad. Sci . vol. i, 1890, pp. 97-104. 



Ward, Lester F. The Potomac or Younger Mesozoic Flora by Wm. 



Fontaine. (Eeview.) 



Am. Journ. Sci. (iii), vol. xxxix, 1890, p. 50. 



