70 LARAMIE BASIN, WYOMING. 
was struck at a depth of 987 feet, in the upper part of the Casper 
formation. A solid 4-inch stream came out under sufficient pressure 
to jet 20 feet through a 1-inch hole. The upper flows were cut off. 
No water was found below the flow at 987 feet. The well is cased 
with 835 feet of 6^-inch casing and 400 feet of 9-inch casing. It is 
stated by J. J. McCutcheon that the pressure was sufficient to raise 
the water 60 feet or more above the surface. Apparently no record 
of this boring is available, but samples from 750 feet to the bottom, 
1,500 feet, preserved in the court-house in Laramie, yielded the 
following descriptive notes: 
Notes on borings from county well, Laramie. 
Feet. 
Red, fine-grained sandstone with some grains of white 
quartz, somewhat flaky 750- 927 
Pure white sand 927-1,000 
Pure white sand with enough red grains to give a slight pink 
tint 1 ,000-1,015 
Pure buff sand; few flakes of limestone (?) 1,015-1,030 
Pure white powder; nearly all dissolves in acid; limestone 
with a few grains of sand 1,030-1,090 
Pinkish, granular, mostly sand; some limestone; contains 
much carbonate of lime, especially in upper part 1,090-1,195 
"Oil sand," "magnetic;" white flakes and chunks ^ to | 
inch in diameter; dissolves in acid; limestone; no sand.. 1,195-1,200 
Marked " Highly magnetic lime rock below oil rock and above 
red sand rock." Chunks \ inch long, slightly purplish, 
very fine-grained limestone; effervesces strongly in cold 
acid. Does not affect the compass needle 1,200-1,215 
Marked "Soft red sandstone." Soft, fine-grained, salmon- 
red powder; considerable fine grit; probably shale 1,215-1,225 
Red sandstone, medium grain, coarser than above 1,225-1,235 
In part granular, reddish as above; more than half, flat flakes 
of crystalline limestone; dissolves completely in acid 1,235-1,245 
Almost all pinkish fine-grained sand, some few flakes of 
limestone 1,245-1,315 
Almost pure pinkish fine-grained sand 1,315-1,325 
Very fine reddish material, probably shale 1,325-1,355 
Coarse fragments of quartz and feldspar up to j 1 ^ inch in 
diameter (arkose) 1,355-1,370 
Coarse pinkish or reddish quartz sand 1,370-1,400 
Perfectly rounded quartz grains, medium fine, one-half 
white, one-half deep red 1,400-1,415 
Sand and chunks of rock consisting of sand grains in a lime- 
stone matrix; dissolves partly in acid, leaving loose sand. 1,415-1,440 
Fine-grained reddish material, probably shale; dissolves 
slowly and partially in acid 1,440-1,450 
Pure white fine-grained sand; effervesces slightly in acid. . . 1,450-1,456 
Coarse quartz grains in fine powder which is almost wholly 
limestone 1,450-1,470 
Fine-grained reddish, white, and black plates; the white is 
lime and dissolves in acid; the black particles may be 
from the drill 1 ,470-1,500 
