210 University Geological Survey of Kansas. 
forming a north-and-south trend known to be from fifteen to 
eighteen miles long. Here oil of good quality is found at 
depths varying from 300 to 650 feet. In daily capacity the 
wells range from 10 to 500 barrels. Most of them flow from 
one to six weeks without pumping. This is the most important 
shallow-sand territory yet developed in the entire Midconti- 
nental area. 
At Cleveland the oil-sand is very deep (around 1900 feet), 
with slight variations in different wells. The production 
ranges from 25 to 300 barrels per well initial capacity, making 
this an important oil-pool. 
Another new pool opened entirely in 1905 is located to the 
north and west of Dewey, four miles north of Bartlesville. 
The first development here was made by Stubbs & Low, early 
in the year, on a lease lying one and a half miles northwest of 
town. The oil-sand averages 1400 feet below the surface; al- 
though a shallower sand, about 800 feet down, is a small pro- 
ducer in some of the wells. From this original development, 
in almost all directions, new wells are frequently brought in. 
Early in November a well two or three miles southeast of 
Dewey started flowing at the rate of 1000 barrels per day; at 
the end of a week it had settled to 450 barrels. A few good 
producers have been brought in still further northeast toward 
the Kansas line; but up to the close of the year there was left 
an unexplored zone nearly ten miles wide between the devel- 
oped area and the southern Kansas line, with good reasons for 
believing it may become as productive as any area yet de- 
veloped. | 
The most extensive development throughout the year was in - 
the areas fairly well proven during 1904. From the vicinity of 
Bartlesville southward, along the extreme eastern line of the 
Osage territory, a surprisingly large number of strong wells 
were brought in. A number of them have begun flowing at the 
rate of 1000 barrels per day, and have held weeks before 
dropping to 500 barrels. For matters of convenience, holders 
of the blanket lease on the Osage lands divided the eastern area 
into three north-and-south columns, approximately three miles 
wide per column. East-and-west lines were now drawn half a 
mile apart; each subarea is called a “lot,’”’ and is numbered 
from the state line southward to the south side of the territory, 
a distance of fifty-eight miles, making 116 lots in each tier. 
Practically all the land extending from Bartlesville to lot 70 
