﻿144 



NEW YORK STATE MUSEUM 



leakage was 5 gallons per minute. (4) In the Hamilton shales a 

 pressure of 300 pounds to the square inch with very little leakage 

 was obtained. 



The unknown factors are too many and too great to make any 

 reliable deductions from these experiments. 



BATE APR 



C<-53 

 J 



ORIGINA ■ GROUND 



WATER Lt' 'tl. • JAN 



.29MAR27 



PROBABLE. L 



Z-4-O 



3 



2 



*"4S' 



6>P.M,, WAT 



Fig. "23 Curve showing fall of ground water level while pumping^fromlboring"^ 



Pumping experiments were carried on in holes 32/22 as follows: 

 The apparatus used was a deep well pump of the type used in oil 

 wells. The holes were of an inside diameter of 4% inches and 

 were cased to the bottom. A 3^ inch working barrel was then 

 lowered to the bottom of a line of wooden sucker rods. The stroke 

 was 44 inches and the nominal capacity of pump at 3,8 strokes per 

 minute was 60 gallons per minute or 86,400 gallons per day. The 

 power was obtained from a 40 horsepower boiler and 35 horse- 

 power engine belted to a 10 foot band wheel which was connected 

 to a 26 foot walking beam. In hole 32/22 at station 607 + 50 the 

 average discharge at 38 strokes per minute was 90 gallons per 

 minute or 129,600 per day. The experiment was continued for 15 

 days and the total amount of water pumped was 1,071,000 gallons. 

 The ground water level was not lowered. It will be noticed that 

 the discharge at this point was S a f° m excess of the theoretical 

 capacity of the pump. This was caused by the presence of gas, the 

 effect of which seemed to be increased by the churning action of 

 the pump. This may also explain the failure to lower the ground 

 water. 



The experiment at hole 34/22 was similar in character. The 

 upper 230 feet of this hole had an interior diameter of ^A inches 



