GEOLOGICAL SUEYEY OF THE TEREITORIES. 383 



penerally obliterated. I could, moreover, dispose of but a short time 

 for researches in a locality which had been sufficiently explored by Dr. 

 Haydeii and other geologists. The few specimens got there represent 

 the foiiowing species : " 



Phragmites Oeningensis, A1. Br. 



In numerous specimens. 



Flabellaria zixckeni, Heer. 



The same form and characters as the specimens of Golden referred 

 to this species. 



QUERCUS CHLOROPHYLLA, Uug. 



A number of specimens of the same species which I considered as 

 identical with this Querciis, in my examination of the fossil plants of 

 Dr. Leconte, in Am. Jour. Sci. and Arts, (1862,) p. 206, and was de- 

 scribed and figured under this name in Proc. Am. Phil. Soc, vol. xiii, p. 

 •413, PI. xvii. Fig. 5 to 7. These leaves are of a coriaceous substance 

 and have scarcely any trace of secondary veins marked on the surface ; 

 their relation is undefined. The Marshall's leaves are slightly more 

 rounded to the petiole than those of Mississippi. 



Ci:xNA3iOMUM APFi>'E (?), Lsqx., Am. Jour, Sci. and Arts, (1868,) p. 206. 



The specimens are not distinct enough to ascertain if they represent 

 this species or Cinnamomum Mississipiense, Lsqx. 



The main coal of Marshall's is mixed near the bottom with large fossil- 

 carbonized trunks, which, by cleavage, appear as cut by the ax. The 

 same are found, too, in the same circumstances at the Oaiion City coal- 

 bed. 



Urie Mines ^ Boulder Valley. 



The soft, sandy shale overlying the lignite-bed is full of finely pre- 

 served vegetable remains. But this shale is left in the mines for roof, 

 or when taken out it is soon crumbling into small fragments under 

 atmospheric influence. By the kindness of the superintendent, Mr. Hill, 

 I got from the mines a few pieces of shale, which, as seen from the fol- 

 lowing descriptions, indicate the richness of the flora of that locality. 

 Further explorations should be pursued in the mines, or in the opening 

 of a new tunnel, with sufficient authority to obtain fresh slabs from the 

 roof shales. 



Sahal Camphellii f?J, Newb. 



A number of fragments of rays of a Sabal, probably referable to this 

 species. The shale being soft-grained and the specimens distinct, the 

 stride of the rays are distinguishable and may be counted. They are 

 very thin and close, like mere woody fibres, 30 in a width of 3^ mill. 

 The rays between the plicatures are 16 mill, wide, and have, therefore, 

 a-bout 150 of these lines. They are all of the same thickness. 



