36 BUI.LETIN 4 ISO 



siliferous, - - - ^ - lo feet. 



g. Bluish and mottled clay, with hard layers of sand. 



Nonfossiliferous, - - - - lo feet. 



fi. Bluish clayey sand mottled with yellow and red, 

 very micaceous, and as far as observed, nonfos- 

 siliferous. This and g are seen in a ravine 

 just east of the cut, - - - - 30 feet. 



The limestone of bed c is by no means persistent; towards the 

 eastern end of the bluff it passes into yellow sand and all trace of 

 fossil remains are effaced. 



By diligent hammering in these calcareous beds we were able 

 to obtain a number of very nice molluscan impressions, and upon 

 returning to the University, by means of gutta-percha moulds the 

 exact form, size and surface markings of many new as well as old 

 species were ascertained. Perhaps the best find at this locality 

 was casts belonging to Persia, a new genus in our Eocene 

 deposits, though not rare in the basal Eocene of Europe. The 

 following are some of the more important species of this locality: 

 Ostrea crenulhjtarginata , Perna conielliana, Crassatella sp.?, Ve- 

 nericardia planicosta and var. , Lticina daytonia, Voluta florencis, 

 Calypirophorus velatzis \ar . , Pseudoliva scalina, Turritella humer- 

 osa, Turritella sp., Cerithhim mediavice, C. globoleve, Mesalia 

 watsonensis , Keilostonia mediavia, Natica near onusta. 



In the little ravine just beyond this cut we observed many large 

 fragments of boulders of a peculiar red, clay ironstone containing 

 some sand and a great number of broken quartz crystals. Im- 

 pressions of fossils are quite common in these boulders. "We 

 noted particularly Turritella htwierosa, Mesalia watsonensis, 

 Venericardia var. smithii, Ostrea, Tellina\ et al. They show that 

 although the rocks are not in place they represent a horizon prac- 

 tically that of the limestone described above. 



Through the kindness of Dr. Smart of Clayton, Mr. Hubbard 

 was enabled to visit by carriage several important localities more 

 or less distant from the village. From Lee's, near Harrison's 

 mill, 3 miles southwest of Clayton, a large and beautiful series 

 of Ostrea crenulimarginata was obtained. 



Another locality, i mile south of Clayton, near the railroad on 

 Dr. Smart's land furnished O. crenulimarginata (fine), Veneri- 

 cardia pla7iicosta, Calyptrophorus velatus, Trochita, Carditim, etc; 

 the oyster however is the characteristic or predominant species. 



Georgia. 



Ft. Gaines and vicinity. — The lowest Midway beds seen on the 

 Chattahoochee, lying but a few feet above well defined Cretaceous 



