84 FLORIDA GEOLOGICAL SURVEY-TWELFTH ANNUAL REPORT 
At 325 feet the conical Orbitolinae indicate the Fredericksburg 
Series of the. Lower Cretaceous as occurring at or somewhere 
above this level. 
The 400-foot level is in the same hard limestone that occurs 
below the conical Orbitolina in other wells of Florida. 
At 580 feet the large numbers of conical Orbitolina may indi¬ 
cate another bed of the Fredericksburg Series or the specimens 
may have come from the upper layer. 
Below this level the Foraminifera are rare and usually repre¬ 
sented by casts except those that have fallen from higher levels. 
No sign of the large, low forms of Orbitolina is found, although 
most of the material is finely ground by the drill and the samples 
are at comparatively wide intervals. The entire thickness below 
325 feet may be all Lower Cretaceous and certainly cannot be 
younger. 
NEW CITY WELL AT JACKSONVILLE, DUVAL 
COUNTY, FLORIDA. 
A description of the samples from this well has already been 
published (Florida Geological Survey, Fifth Annual Report, 1913, 
pp. 177, 178). Depth of well 980 feet. Casing was put in to 500 
feet. 
0-510 feet. 
510-550 feet. 
550-780 feet. 
820-845 feet. 
845-900 feet. 
900-980 feet. 
Throughout this distance the samples show no foraminifera. 
Lepidocyclina occurs but only in poor fragmentary specimens. 
Finely broken material with broken specimens of Lepidocyclina, 
Operculina, Nummulites, and Gypsina occurring apparently in 
in a mixed condition. 
Orbitolina of the conical form occurs. 
Orbitolina as above but in both cases with scattered fragments 
from the upper layers. 
Orbitolina of the large, low, concave form with the smaller 
conical form from above. 
PROBABLE STRATIGRAPHY. 
The upper portion without foraminifera must depend on other 
data for solution of its age. The upper portion has been recorded 
