Editorhil Coiiniif')it. 177 
lbs. respectively to 25 1V)S. at the works sufficiently proves the im- 
possibility of successfull}' conveying the gtis in pipes to any great 
distance, at the same time the striking irregularity in the rate of 
diminution precludes the hope of discovering any rule, and raises the 
suspicion of considerable error of observation. 
Another interesting fact illustrated in the same paper is the 
steadily diminishing pressure at the wells, foreboding ultimate 
failures at no distant date, a fact on which the Geologist has 
repeatedly insisted. The following taljle extracted and condensed 
from the same source establishes the assertion. The pressures 
are those attained by the wells after they have been closed for one 
minute. 
GRAPEVIILE — TABLE OF MINUTE PRESSURES. 
Well, Depth. At April, Dec, 3Iav., Nov., Dec, Jan., Feb, 
feet, first. 1S89. 1889. 1890. 1890. 1890. 1891. 1891. 
Klingensmith.llOO 4(30 390 250 180 100 95 75 05 
Henry li;:33 460 380 260 170 105 100 75 70 
Moon 1149 460 390 260 175 100 95 75 65 
Menosinger ...1466 410 390 240 170 95 85 55 40 
Kipple 1360 260 260 260 165 100 95 75 65 
Byers 1350 125 — — ^ — 60 
Agnew 1420 75 ■ — 65 65 
This loss of pressure and consequentl}' of gas in less than two 
years, points unmistakably to one conclusion — the disappearance 
of high pressure gas before long and the sinking of the great 
gushers to low pressure wells. They will then probably be very 
durable and the rate of diminution will itself diminish. Though 
useless for manufacturing purposes, they may still be very valu- 
able sources of gas for domestic consumption. At the same time 
it is quite possible that even this hope may be disappointed and 
that the pressure will run so low as to yield practically nothing. 
This is indicated by the fact that the rate of diminution is at pres- 
ent nearly constant as is shown by the following table: 
RATE OP DIMINUTION OF PRESSURE PER DAY. * 
From April 29, 1889 646 days 321 lbs. 0.5 lbs. per day 
" Dec. 16, 1889 413 " 188 " 0.455 
May 26, 1890 252 " 107 " 0.4 
Nov. 3, 1890 91 " 30 " 0.4 
" Dec. 1, 1890 03 " 30 " 0.48 
Jan. 5, 1891 28 " 7 " 0.25 " 
Professor L. points out that this falling off indicates that the gas 
* In borrowing this table we have taken the liberty of correcting a slight mi^■take in 
Prof. Lesley's calculation by which he had brought bnt the diminution much too high. 
The last figures may be doubtful. 
