520 MESOZOIC FT.ORAS OF UNITED STATES. 



A secoiul collection for th(> same sui'vey was iiiado, as Mr. Bihljiiis 

 states, from tiiis locality, luit the labels do not sjive any locality or date. 

 They simply bear the mark: ''M. (i. S." and the numbers 5913-5964." 



The third collection was made by Professor Ward on May 11, and 

 the fourth, also by him, on May 17, 1897. These are both large collections. 



A fifth but smaller collection was made by Professor Ward and Dr. 

 Arthur Hollick on June 14, 1897. This last was taken entirely from 

 one impure iron-ore nodule. 



The exact locality is in the large cut of the Baltimore and Ohio 

 Railroad ])etween Langdon and Rives stations, but nearer the former 

 and chiefly toward the Langdon end of the cut. Langdon is the present 

 name of the station formerly called Mills station, being the place where 

 Clark Mills, the sculptor, resided and where his foundry was located. 

 It was here that the Statue of Libert}' designed b>' Crawford was cast 

 by Clark Mills. The plants occur in true white iron ore or carbonate 

 of iron, but the slabs holding the vegetable matter consist of impure 

 iron ore and have a somewhat reddish color. Nearly or quite all the 

 specimens came from the southeast side of the tracks, and the bed has 

 a length of over 100 yards and a thickness of about fi feet. The best 

 specimens were obtained about 6 feet above the tracks, but some from 

 as high as 10 feet. These latter occurred nearer the middle of the cut, 

 viz, 200 yards beyond the whistle post for Langdon. 



From all these collections the following species were obtained. 

 The number of specimens is for all collections, and the date of collection 

 and the proprietorship are stated only for the figured types and for 

 cases in which only one specimen was secured : 



Athrotaxopsis expansa Font 52 specimens. 



Athrotaxopsis tenuicaulis Font 15 specimens. 



Ctenopteris insignis Font. ? 2 specimens. 



Cycadeospermum ellipticum Font 2 specimens. 



Cj'cadeospermum obovatum Font 1 specimen. 



Ficophyllum tenuinerve Font. ? 1 specimen. 



Glyptostrobiis (Taxodium) brookensis (Font.) Ward.._ ..37 specimens. 



Nageiopsis heterophylla Font. ? 1 specimens. 



a This may be the collection made by Mr. Bibbins and myself on July 28. 1896, when he first guided nic 

 to the locality, but it is scarcely large enough, as we had difficulty in carrying the specimens to the railroad 

 station. They were left there until Mr. Bibbins had them shipped to Baltimore. — L. F. W. 



