344 EH. W. Hilgard— Geological Reconnoissance of Louisiana. 
Profile of Artesian Wells, west fork of Calcasieu river. 
KirkMAn’s WELL. Louisiana Or Coe.’s WELL. Formations. . 
Depth. Thick- Materials. sere Materials. : 
ness. ness. ; 
Ft | Ft. Ft. | Ft. 
Blue and yellow clay, Blue clay, sometimes with) | 2 «, 
with some sand strata, 160 | layers of s he oaked| #3 3 
with petrolew ae 
160 @ 
354 (tes Loose pao and Bes 
a 138 to 153 ft. v ms fog Ge j 
al 173 pg 153 to 173 fi a 239 
or material. NFS 
i | 333 ; 
a es Gray laminated clay 80 
pied al 343} 10] (‘soapstone’). E Ey . 
Sand ith Blue, sandy, nodular lime-| 'g 2 
reat aay lam- 40 | stone,with marine shells.| ‘oO 
96 383 Petroleum and gas. > 
sist 7a and sa 56 ft, sees AD bia eee 
Se 60 imestone ; 
A50j22-0:. Sandy pipeclay, 4 ft, | 443 inte, Guanes through. 
d 
100 |Pure crystalline sulphur. | .2 4 
543 
perce Sulphur and gypsum, al- E 
ternating. - 
147 |About ¢ sulphur. Z 
5 ft. Sulphur bed at 650 ft] 3 
690 10-1 i : 
Pure gypsum. Dense, gra- “4 
540 | nular, and coarsely bit bg 
talline, grayish or white. 
there can of course be no doubt as to the identity of the Port 
Hudson and Orange Sand groups, interesting to note, 
that here as elsewhere the Orange Sand rests on a deeply denu- 
ded surface, and has itself suffered subsequent denudation ; as 
The pebbles 
is evidenced by ” relative dereles in the two bores. 
are of the usual character; chiefly chert and siliceous sand- 
ios gait tes of paleeozoic fossils ; the it 
ann still sh 
observed Bee est fy five ounces. 
ll has chanced ape a seeieg of denies 
summit 
While Kir 
tion, the Prise se well has struck a W. 
resisted denudation by the aid of a = of hard clay ale in 
which, besides, there at a layer of sandstone. As soon as 
was penetrated there was a violent nak of aaaieas tible gas, 
and water mixed with leum. The amount of the latter 
however, never exes g | few barrels a day, even when 
ump was used ; and great difficulty was experienced in pene 
