392 .M1>UZU1C KLORA6 UF UNITED STATES. 



We saw no reason to qnestion the Older Potomac age of the lower beds 

 at Favetteville. as descril^ed above, and it now seems certain that such 

 beds occur at many points in that general region, although, unfortunately, 

 no paleontological evidence has yet been found. 



Several papers relating in one way or aiiothei- to the Older Potomac 

 appeared during the year 1895. 



In a paper in Science" I gave the results of my examination at Aix 

 and Fonscoloml^e in Provence, France, in August. 189-i, of the material 

 collected in Portugal by "SI. Paul C'hoffat, and sent to the Marquis Saporta 

 at Aix for determination. It contained archaic dicotyledons from the 

 Lower Cretaceous, about wliich the Marquis had written me and which 

 I greatly desired to see. I foimd his work nearly ready for distri):)ution 

 and I received it soon after my return to America. This paper is prac- 

 tically a review of that work, with special reference to the American 

 floras that most closely correspond to those of Portugal. 



In the same number of Science (p. 362) there is an unsigned note, 

 which is known to have been contributed by Mr. F. A. Lucas, on the 

 vertebrate remains that had recently been discovered ])y Mr. Bib))ins in 

 the Potomac formation of Maryland. These represented the genera 

 AUosaurus, Pleuroccelus, and Priconodon, and also contained a tooth of 

 Astrodon Johnstoni Leidy. 



Doctor Knowlton contributed an article on the primitive dicotyledons 

 of the Potomac' to the Popular Science News for April and May, 1895, 

 calculated to popularize this important branch of the subject. 



Mr. Bibbins's paper '' in the Johns Hopkins University Circular, No. 

 121, gives a clear summing up of his studies in the formation. 



Mr. Benjamin Smith Lyman'' reported probable Older Potomac 

 beds in Pennsylvania, on Neshaminy Creek, near the mouth of Mill Creek, 

 in the southern edge of Northampton Township, and at Sunny Hill 

 schoolhouse, near the mouth of Core Creek, in Middletown Township, 

 thus confirming the observations of Mr. McGee, as well as those of Mr. 



"Tlie Mesozoic flora of Portugal compared with that of the Inited States, by Ijester F. Ward: .Scieiue, 

 n. s., Vol. I, March 29, 1895, pp. 3.37-34G. 



''The oldest dicotyledons, by F. H. Knowlton: Popular Science News, Vol. XXIX. .\'ew York, April, 

 189.5, pp. 49-51; May, 1895, pp. 66-68, illustrated by 20 text figures. 



f Notes on the paleontology of the Potomac formation, by .Vrthur Bibbitis: .Johns Hopkins University 

 Circulars, Vol. XV, No. 121, Baltimore, October, 1895, pp. 17-20, one plate. 



'' Report on the New Red of Bucks and Montgomery Counties, by Benjamin Smith Lyman: Pennsylvania 

 State Geological Summary Final Report, Vol. Ill, Part II, 1895, pp. 2634-2635. 



