572 A. F. FOERSTE 



underlaid by a Silurian section, 85 feet thick, belonging to the 

 Brownsport horizon, and 11 feet of reddish rock only doubtfully 

 referred to the Dixon bed. Although the Linden bed is not 

 present, the top of the Brownsport bed at this locality is strati- 

 graphically equivalent to the top of the Brownsport bed north 

 of Linden. The most striking characteristic of the exposures 

 near Linden is the fact that the Brownsport bed, as far as 

 exposed, consists chiefly of limestone, and shows comparatively 

 little tendency to weather into clays. It does not form glades, 

 and at no point displays the great wealth of brachiopods and 

 sponges characteristic of the lower part of the Brownsport bed 

 farther southward. At the entrance of Jacks Branch into Short 

 Creek, east of the home of E. Duncan, numerous corals are found 

 18 feet below the Hardin sandstone. 



Northeast of Lego, on Short Creek, 300 yards southeast of 

 the homes of W. E. Ashley and P. Denman, the Hardin sand- 

 stone, 6 feet thick,- is underlaid by 60 feet of limestone belong- 

 ing to the Brownsport bed. The top contains Uncinulus strick- 

 landi and Gypidida roemeid; 43 feet below the top Conchidium 

 legoensis occurs. Along the road leading east from New Era the 

 lower part of the Brownsport bed, for a thickness of at least 30 

 feet, forms a glade containing numerous specimens of Astraeo- 

 spongia meniscus, and also specimens of Astylonianon cratera and 

 Cd.ryoma?ion stellatirn-sidcatum . 



In the area included between Perryville, Linden and Lego, 

 the glade forming part of the Brownsport bed appears to belong 

 chiefly to the base of the section, while the upper part is repre- 

 sented chiefly by comparatively unfossiliferous limestones. 



At Glenkirk and back of Clifton only the base of the Browns- 

 port bed, with a rather abundant fauna, is preserved. Along the 

 river, three quarters of a mile above Clifton, the Dixon clay is 

 overlaid by an exposure of the Brownsport bed 100 feet thick. 

 The lower part, 25 feet thick, is cherty and full of fossil sponges. 

 The middle part, 50 feet thick, consists chiefly of soft limestones, 

 weathering to clay; it is evidently composed of material which 

 on long exposure would be glade forming. The upper part, 25 

 feet thick, consists of harder limestone. At the top of the 

 Brownsport bed a form of Caryocrinus ornatus occurs. 



