OLDER POTOMAC OF VIlMilMA AM) MARYLAND. 54,") 



FOSSII. I'l.A.VTS KKOM (iKlOI.WS lltdN Ml.NE. 



[PI. LXXX. No. 5:^.] 



In LS97 l\Ir. Arthur Hihhins collected at (lennan's iron mine a speci- 

 men of lijrht-colored clay whicli on \muii broken thi'oiigh I'cvealed a raised 

 seed on one of the pieces and the depression that it formetl on the other. 

 The form of the seed is olxn'ate, and it is probably (Ujcadecmpermum 

 obovatum Font. One side of the piece that contains the depi-ession made 

 by the seed shows also a small male ament of some conifer, iK)t very 

 distinctly pre.sei'vod. The label Ijears the number: W. C. B., 6304. 



These specimens are not sufficient to fix the age of the bed, but 

 so far as they are concerned it may well be Arundel, as indicated on 



the label. 



FOSSIL l"LA.\TS FltdJl IKHiliS-S lltON MIM:. 



[PI. LXXX, No. 5s.\ 



There are three small collections from this locality, all made by 

 Mr. Arthur Bibbins for the Maryland Geological Survey. One of thcin 

 has the date 1897 on the label. It consists of a single rock specimen 

 broken into three pieces. The rock is a heavy fei'ruginous sandstone, 

 reddish brown without and dark within. The label bears the number: 

 M. G. S., 8780. Another consists of a single rock specimen of the same 

 character. There is no date on the label, but it has the number 8317. 

 The third collection is from the dump opposite Hobbs's mine and 

 contains two specimens of a somewhat different rock having a lower 

 specific gravity. There is no date, but the number is 8872. 



Only two species, both doubtful, can be recognized among these 

 specimens. They are: 



Athrotaxopsis expansa Font. ? 4 speciinens. 



Nageiopsis zamioides Font. ?. 1 specimen. 



FOSSIL I'LAMS FHO.ll Til' TOl'. 



[PI. LXXX, No. 58.] 



Three collections were made from this locahty. The first consists of 

 a single specimen obtained by Mr. Arthur Bil:)bins in 1890. The second 

 contains a considerable number of specimens and was made by Mr. Bibbins 

 and Professor Ward on August 31, 1896. This last is deposited in the 



MO-N XLVIII — 05 3.5 



