$ 
82 TRANS. OF THE ACAD. OF SCIENCE. 
days were lost in making necessary repairs, it had been sunk 848 
feet deeper, making its total depth 2199 feet. Since August, 
1856, the first 456. feet of the well have been tubed with a three 
inch wrought-iron pipe, and, at the time of inserting this, it was 
found that the water would rise toa height of about 75 feet above 
the surface. 
Carburetted hydrogen was first perceived in passing the thin 
_ Shale at a depth of 457 feet, and was found to increase in pene- 
trating the soft Shales at the depth of 650 feet and the Red Marl 
beneath, to augment in passing the Shale at the depth of 885, and 
to be evolved most abundantly in passing the Bituminous Marl at 
the depth of 950 feet. This stratum of Marl was found to be 
very bituminous, and the borings, when heated, evolved much car- 
buretted hydrogen, leaving a clay colored by the oxyde of iron. 
At the depth of 1090 feet the quantity of gas was found to dimi- 
nish, and this diminution continued to the depth of 1136 feet. 
At the depth of 1183 feet it began again to increase, and became 
still more abundant at the depth of 1222 feet. At the depth of 
1270 feet it diminished in quantity ; but, at 5 feet below, it begam 
again to increase, while at the depth of 1301 feet its quantity was 
‘observed to diminish. ; 
; Sulphuretted hydrogen was first observed at the depth of 1510 
* feet, and the water was then found to be strongly impregnated 
* 
_ The boring was effected by a simple wedge-shaped drill : 
_ Inches in diameter, the total weight of which was about 
by hand power, and, for performing all the work conne 
the boring, the labor of four sieineka, in general, daily re 
+ Such is the history of the boring of the well, as gathered from 
