178 A, R, SCHULTZ 
DESCRIPTION OF FIG. 2 
Diameter Depth Owner 
Well 1 8inches 751 feet 
6c 2 8 cc 2260 « 
“ 3 6 6c 751 73 
66 4 6 73 751 “c 
; 2 4 i City of Madison (Waterworks) 
T: 7 8 6 2260 « 
a3 8 8 6c 751 (a3 
73 Q, Ie 6c 821 “cc 
“ TO. LO 73 736 (U3 
Gi rte to15 “ State of Wisconsin 
“72 795 ‘ Chicago, Milwaukee & St. Paul Ry. Co. 
Blount Street well (No. 8). All other wells (see Fig. 2) are connected 
with the suction of the pumps at the pumping station. The Main 
Street well is scarcely affected, while the pumps at the pumping station, 
with a vacuum of about 18 inches, are drawing water. The nearest 
well of the group, the Livingston Street well or No. 9, is only 1,000 
feet from the Main Street well No. 10. When the Blount Street 
propeller pump is working and the water in the well lowered 72 feet, 
the water in the Main Street well, 2,000 feet from the Blount Street 
well, recedes about 14 feet, and then remains stationary. Tests of 
well No. 12 at the C. M. & St. Paul roundhouse, a mile distant, fail 
to show any effect of the pumping at the city well, even while the 
water in the wells No. 10 and No. 8 was 72 jeet below the surface 
and the total capacity of all the wells was 3,200,000 gallons per day. 
As clearly indicated by the experiment and by the above tests the 
drop in the water level in the vicinity of a well is not due so much to 
the friction through the major course of the water where the move- 
ment is slow, but is chiefly due to the friction in the vicinity of the well, 
where the water is moving on its way to the well and on through the 
casing itself until it reaches the surface. Back a short distance from 
the well the water oozes slowly from the small openings and maintains 
the same head as before the well was pumped or allowed to flow. 
Several tests were made to see what effect confined air between the 
water table and the gathering ground would have upon the water level 
in the wells. During this experiment well A was sealed so that no 
air could escape through it. The water in the pipe stood 1 foot 2 
inches below the escape pipe, when water was turned on and the 
