OIL WELLS OF ENNISKILLEN. 247 
I ascertained the depth of nine separate flowing wells, at points 
scattered over the whole oil-producing area, to be as follows : 
The deepest well...... Geiss is 230 feet in the rock. 
«next deepest...... hi ae Is QOS) ites a 
My ae ERED Bee is 200 ee « 
3 #6 vaaan Chea iy is 182 ff ue 
ss ‘ VR REL Oris ah SO) uve sche 
Pera Ri Noe a ee, Diy its IS LGD isk « 
f Bois width eid. A chy, rey ayo yet ¢ 
The shallowestw ells { : sa i ce At present flowing. 
It ought to be borne in mind, that I give the depths under the 
rock surface, not under the surface of the ground; the former being 
nearly level, while the latter is very uneven. Over the surface of 
the rock, the thickness of clay ranges from forty feet in the flats of 
the creek to eighty feet on the banks. 
The deepest well (G) was the first to fail; in fact this one only 
discharged 4,000 barrels in all. The next on the list (1), the 
** Feroe”’ well, failed. Then the wells (B and C) at opposite extre- 
mities of the oil-producing area gave way. Then well H, in the 
centre, and close by the gum beds, ceased flowing. Then various in- 
termediate wells failed ; until now the only old well flowing is F, with 
a depth of one hundred and nine feet under the rock surface ; and 
its companion (E), recently made, within thirty or forty yards of it, 
and to the same depth in the rock, yields a copious supply. 
In ceasing to give a discharge of oil, these wells seem to give no 
previous indications of a coming change. The iron pipe which con- 
veys the fluid from the bore in the rock to a convenient height above 
the surface of the ground, continues to yield a discharge ; but this 
discharge is suddenly changed, in most instances, from petroleum 
to salt water, and the water flows on in a continuous stream, as did 
the former substance. 
The mention of some apparent anomalies may be of interest to 
those who desire to form satisfactory theories regarding the various 
phenomena connected with the mineral oils. 
1. In the immediate neighbourhood of all the flowing wells, and 
on the next lot to what is termed the gum-beds, the rock was bored 
to a depth of three hundred feet—seventy feet lower than the lowest 
well—without finding the slightest trace of oil. 
