f 
so SIMPSON : THREE DEEP BORINGS AT HALIFAX. 
water has been tapped to a considerable extent by wells in 
various parts of the town. 
About fourteen years ago a High Level Railway was built in 
the upper part of the town, which necessitated a deep cutting in 
the Rough Rock, almost along the line of the strike of the beds. 
This cutting intercepted a considerable quantity of the water 
held by and passing through the sandrock, and seriously 
diminished the supply to be obtained from some of the wells cut 
into it lower down the dip slope, and it was to obtain further 
supplies that the borings described here were undertaken. 
Messrs. Ward's and Hollingrake & Clegg's premises are 
situated in the upper part of the town, about 600 yards a])art, 
and each on approximately the 700 feet datum. 
Messrs. Ramsden's are lower down the slope, on the 500 
feet datum, about three-quarters of a mile due east from Messrs. 
Ward's, and a mile to the south-east of Messrs. Hollingrake 
and Clegg's. 
In the sections to scale accompanying these notes I have, 
for the purpose of correlation, drawn on the same plate the 
<iverage section of these rocks given in the Memoirs of the Geo- 
logical Survey of this district. 
The two coal bands shown in this section are not specifically 
mentioned in the Memoirs, but are figured in the marginal 
section published with the one-inch geological map of the area. 
It may be noted also, in reference to the Survey section, 
that it includes the whole series of the local Millstone Grits, 
with the exception of the Kinderscout Grit at the bottom of 
the series, and the shales between this Grit and the Sandrock 
A of the section. The Kinderscout Grit of this district is given 
as averaging 350 feet thick, and the shales which part it from 
Sandrock A 145 feet, making a total thickness for the whole 
series of 1,359 feet. 
It will be obvious that in sections drawn to so small a scale 
it is impossible to mark all the minor changes. The Grits are 
notoriously very variable, and borings only a few yards apart 
