Haworta. | Geology of Lead and Zine Ores. 61 
went 480 feet beneath its surface; one at Weir City, which 
went 210 feet below the upper surface of the Mississippian ; 
one at Girard, figure 2, plate X VIII, with a total depth of 900 
feet, which struck the Mississippian at 450 feet and, therefore, 
went 450 feet beneath its upper surface; and finally one at 
Neodesha, figure 2, plate XIX, with a depth of 2412 feet, 
which struck the Mississippian at 1090 feet beneath the sur- 
face and, therefore, went 1322 feet beneath its upper surface. 
This latter well record is important because more care was 
given it than is given the ordinary well. It was drilled by 
the Forest Oil Company as a test well, and was begun almost 
immediately after they purchased the Neodesha oil proper- 
ties from Guffey & Galey. This is the same company which 
drilled the Bedell deep well in West Virginia some years be- 
fore, which still remains the deepest boring on the American 
continent, having reached a total depth of 5575 feet. Mr. 
Patterson, still at Neodesha, had immediate charge of the 
well and kindly kept duplicate sets of the drill cuttings, one 
of which is preserved in the office of the Standard Oil Com- 
pany, at Neodesha, and the other presented to the museum 
of the State University. Immediately upon their receipt a 
superficial examination was made, the results of which were 
given to the public. But no detailed examination was made 
until recently. In the preparation of this report a very de- 
tailed examination of every sample cutting was made, in order 
that a thoroughly reliable record could be built up and put 
into permanent form. 
It should be stated that beneath the Mississippian lime- 
stone is a great mass of calcareous sandstones and arenaceous, 
dolomitic limestones. From the drill cuttings alone some- 
times it was difficult to determine just what names touse. The 
dolomitic limestones were thoroughly crystallized, and were, 
therefore, composed largely of little granular crystals of dolo- 
mite, which were broken up by the drill and strongly re- 
sembled sandstone cuttings. It was only by chemical and 
microscopical examination that they were distinguished from 
the sand grains. In fact, the sandstones and limestones 
grade into each other in such a way that scarcely a sample 
of the limestone could be found which did not contain water- 
worn sand grains, and scarcely a sample of sandstone could 
