Missouri Botanical Garden 
George Engelmakn Papers 
222 TRANS. ST. LOUIS ACAD. SCIENCE. 
to 4J inches. A 4J-inch drill was then put down, and boring 
commenced March 31, 1866, cbntinuing night and day for 3 yrs. 
5 mos. and 10 days, every day except Sunday, until August 9, 
1869, when work was stopped at a depth of 3843 feet 6 inches. 
From the 9th of July, 1866, to the 28th of January, 1867, was 
occupied in enlarging the bore. It was enlarged to 11J inches to 
a depth of 1131 ft., and a short iron tube put down. The bore 
below was enlarged to 6 and afterwards to 10 inches, to 953 
ft. depth. A sheet-iron tube, 79 ft. long, was then put down, 
resting on an offset at the bottom of the 10,-inch bore. The 4-inch 
bore was then enlarged to 6 inches to a depth of 1022 ft., and a 
5-inch wrought iron tube, weighing over 6 tons, put down, reach- 
ing from the top to the offset at the bottom of the 6-inch bore. 
The 4^-inch bore was continued downwards to the depth of 3843 
feet 6 inches without need of further tubing. 
Two wooden plugs with iron screws at the end were driven in, 
one at the 1022-ft. offset, the other at the 953-ft. offset, in order to 
separate the fresh from the salt water. If these were withdrawn, 
the well would be clear from the top to the bottom. The 5-inch 
tube, reaching to 1022 ft., has been withdrawn, and a pump put 
down to 400 ft. This pump was worked a few days the water 
On the Tern 
srprii 
nroke in the well, and 
broken parts were taken out the same day from a depth of 
227 feet. About this time soft clay fell from the upper portion 
of the bore, when reaming to 6 inches was begun. On the 23d 
of the same month, 53 ft. of 5-inch tubing was put in and boring 
resumed. On the 19th of June, the jars broke at a depth of 841 ( 
ft., and four days were occupied in getting them and their broken 
parts out. On the 14th of November, 1867, the rope attached to 
the sand-pump parted, leaving the pump and most of the rope in 
the well, but it was taken out in five days. On the 14th of May, 
1867, at the depth of 1876 ft., the jars broke, and two and a half 
days were consumed in taking out the broken parts and making 
repairs. At 2140 ft. a hard flinty opening was struck which caused 
the drill to deviate from a direct course, and it was with difficulty 
that the place was passed. On September 6t.h, at 2354 ft.yl 
