Notices of Memoirs—Prof. Hull— Water in Trias. 008 
sae : : { Bunter Sandstone ; light reddish-brown, pebbly 
sandstone ; 262 feet. 
Grey and black shales and sandstones, with coal 
and ironstone ; plants abundant; 514 feet. 
Reddish, purple and grey grit, sandstone and mica- 
ceous quartzite; 19 feet. 
CoAL-MEASURES 
Pre-CARBONIFEROUS { 
The interest attaches to the beds called “ pre-Carboniferous.” 
They consist of sandstones, grits, and quartzites, of purple and 
yellowish tints, occasionally shaly. They contrast strongly with 
the Coal-measures, not only in the absence of beds of coal, grey 
and black shale, and ironstone, but also in the complete absence of 
plant remains with which the overlying Coal-measures are crowded ; 
not one solitary instance of any plant-form having been found 
amongst all the cores after careful examination. It became clear 
that the beds were not of Carboniferous age, yet it was very difficult 
to determine with certainty to what period they were to be referred. 
Such sandstones, grits, and quartzites might be found in several pre- 
Carboniferous formations, either the Old Red Sandstone, the Upper 
Silurian, Lower Silurian (Ordovician), or Cambrian. A reference to 
the Old Red Sandstone was considered out of the question, as this 
formation is not found anywhere in this part of England; nor did 
it seem probable that they were referable to the Upper or Lower 
Silurian period, though this is possible. On the other hand, we 
could not forget that at no great distance to the south of the boring 
Lower Cambrian beds form the floor of the Coal-measures, and, 
although the cores at Netherseal boring did not show a very strong 
resemblance to those of the Hartshill ridge, there was no good reason 
why they might not be referable to the same general period, and 
consist of beds not visible in that locality. For these reasons I am 
disposed with some hesitation to regard the cores as of Lower Cambrian 
age, a view in which I am supported by Professor Lapworth, who 
was kind enough to examine the specimens of the cores which I 
brought away with me from Netherseal Colliery. I will only add 
that no conclusion could be gathered regarding the question of 
unconformity of these beds with the overlying Coal-measures, as the 
dip of both series appeared to be very slight. A strong discordance 
could have been immediately detected. 
Since the above was written No. 2 boring has entered these old 
rocks, and the specimens brought up confirm the conclusion arrived 
at from the results of boring No. 1. The rock entered at a depth of 
about 760 feet consists of reddish vitreous quartzite, slightly mica- 
ceous, and very similar to the Hartshill stone of Warwickshire. 
VII.—Nortrs on THE WatTER-BEARING Capacity oF THE NEw Rep 
Sanpstone or NorrincHam. By Professor Epwarp Hutt, 
LL.D., F.B.S., F.G.S. 
BOUT half a century ago, before the problems of sanitation 
were generally understood, the town of Nottingham was 
placed in a most unfavourable position as regards drainage and 
water-supply. As regards the former the drainage of the houses 
