69 JOURNAL OF THE 
Among the fossils secured from the upper 700 feet, classed 
as Ripley cretaceous, the following may be mentioned : 
Cardium enfaulense Gabb, was found at 40 feet and 538-558 
feet, and fragments of this or another Cardium were found 
also at 50, 485-490, 520-540 and 556-575 feet below the sur- 
face. \ 
Anomia argentaria Morton, was also common, having been 
obtained at frequent intervals from 40 to 600 feet; and frag- 
ments of an anomza, too small for specific classification, were 
also found 800 to 900 feet below the surface. 
Exogyra costata Say, was abundant throughout the upper 
half of the section; and below 500 feet a varietal form of this 
species, approaching Hwogyra ponderosa Roemer, in surface 
feature, was found almost to the granite. 
Ostrea tecticosta Gabb, was common from 230 to 650 feet; 
and O. /arva Lamarck, from 250 to 330 feet; and fragments 
secured at 518 feet probably belonged to one of these species. 
O. subspatulata Lyell & Forbes, was found only between 332 
and 380 feet. Throughout the entire section, however, were 
found numerous fragments of Ostrea too imperfect to serve for 
specific determinations. Ve/eda lintea Conrad, and Aphrodi- 
na tippana Conrad (?) were found only at 340 to 500 feet. Bar- 
oda Carolinensis Conrad, and Cyprimeria depressa Conrad, 
were found only between 332 and 380 feet; and fragments of 
Pecten were found at 40 to 50 feet. 
Gryphaea vescicularis Lamarck, was found ai 250 to 265, 
and 720 to 735 feet (7); and Juoceramus cripsi Mantell, at 575 
to 585 feet and probably also at 500 to 518 feet. Unrecognized 
species of Avicula or Gervilia were obtained at 390 to 400 feet ; 
Corbula at 492; Pectunculus 520 to 540 feet, and Lunatia 520 
to 590 feet ; Lzthophagus 540 to 560 feet. 
Cassidulus subguadratus Conrad, was observed at 518 to 538 
feet, and echinoid spines and fragments of the same or allied 
species were also found at 100 to 170 feet. Sharks’ teeth, fish 
vertebra, fragments of turtle shell, lignite and pyrite were 
found at intervals in the section, 
Below 720 feet, and down to the granite (1109) Ostrea cre- 
a. 
