250 Cincinnati Society of Natural History. 
Shell | Nucleus | Coral 
8461 4084 0617 
| 
Volatile Hydrocarbons......... 17% 98% | 1.62% 
WVolatilevat red heatven.. -2e 3248) 220 3.08 
Ba SOs ere sas ccake saree eae 92.78 92.59 | 83.4 
aS Ole srnteiade siereiremae seeker te 3.31 2.79 | undetermined 
Sr SO a aati check 1.36 10473} none 
Undetermined (iron, unburned : | 
WrdowWlabinwecesacos use sono 1.60 2.40 
100.00% | 100.009 | 
*After removing nuclei from several broken pellets. 
+Taken out of the same broken pellets. 
Specific gravity of pellets, 3.99. 
In order to ascertain the geological age of the stratum 
whence the pellets were ejected, Dr. Lindahl secured, 
through the courtesy of Mr. Thrasher, a copy of the boring 
log, which contained the following note: ‘1322 to 1375 feet : 
Oil, sand, . .. . . Formations (pellets) came from 1350 
feet. Water temperature 120°.” 
Comparing the log with data published in U. S. G. S., 
Bulletin No. 212 (‘Oil Fields of the Texas-Louisana Gulf 
Coastal Plain. By Dr. C. W. Hayes and William Kennedy), 
Dr. Lindahl came to the conclusion that the strata at the 
above depth might reasonably be guessed to belong to the 
lowest Neocene beds, “3 d”’ of the section on page 20 of the 
said Bulletin, and Dr. Hayes, to whom the log was submitted, 
confirmed the conjecture in the following words: ‘‘This is as 
neat as any one else could guess.—C. W. H.” The Bulletin 
states that sands of those beds “‘ carry fossils of Miocene age.” 
As remarked above, Drs. Ulrich and Vaughan considered the 
brown particles as fragments of a Miocene coral. 
For the photo-micrographs, here reproduced in half-tone 
(Figs. 2-4), I am greatly indebted to Drs. M. L. HEIDINGS- 
FEI.D and A. J. MARKLEY, of Cincinnati. I also wish to 
express my gratitude to Dr. JosuA LINDAHL, Director of the 
Museum of the Cincinnati Society of Natural History, for his 
kind and unselfish co-operation in connection with the subject 
herein presented. 
