368 REPORT—1890. 
cases a piece should be cut out of the boring-chisel, to bring large pieces 
of the rock for examination. 
WARWICKSHIRE. 
The Coventry Corporation Waterworks consist of a series of bore- 
holes, discharging into a tank at Spon End, by natural artesian pressure. 
From the tank water is pumped to a service-reservoir above the city. 
No water is pumped from the ground, and the water therefore maintains 
its purity. 
The site of the No. 1 bore-hole, and subsequent operations, have been 
the care of Mr. Hawksley, C.E., up to the last bore-hole, which was 
jointly recommended by Mr. Hawksley and your reporter. 
No. 1 was completed in November 1855, and was carried from the 
bottom of the storage tank, at a point S. 17° W. from the centre, near the 
edge. For the section I am indebted to Mr. Purnell, C.E., the city engineer. 
The bottom of the tank is 21 feet 9 inches below the surface of the 
ground, when No. 2 bore-hole, or rather the well above it, commences, 
the upper crust of which is taken as the surface in Nos. 1 and 2 bore-hole 
sections. The tank is 16 feet in depth, and generally contains 13 feet of 
water. 
No. 1 Bore-hole. 
Ft. in. Ft. in. 
21 9 To bottom of tank 5 : 5 ; ; 2521989 
81 0 Red sandstone ° : : ; 4 = uDObad 
136 0 Very compact red marl . you a ; . - 55 0 
143 0 Red sandstone ; ;: ‘ : : i 2. eh 
176 O Red marl 5 A ’ 3 5 : ; + por ap 
177 O White sandstone . A - : : 2 :., sy 0) 
190 0 Red sandstone : : < ‘ 5 : 7 roe 
195 0 Red marl P . F : 5 ; 5 of. nD) 
No. 2 boring, completed in September 1860, carried from bottom of 
well, 24 feet 9 inches deep, about 20 feet outside the limit of the tank, in 
S. 30° E. direction, but the water flows into it by natural pressure. 
Section of No. 2. 
Ft. in. Ft. in. 
24 9 Details unknown . F ‘ - 2 » 2859 
32 9 Red marl : : . A 4 , zi ¢. Si SeeO 
34 9 Sandstone . é : ‘ . 5 ‘ 1 FZ) 
40 9 Red marl : Z - ‘ : - S GTO 
62 0 Sandstone 6 ‘ 3 : F A : , Dis 
71 9 Red marl ; - : : 4 2 ; ¢. SO 
84 9 Sandstone ; : : 2 : z : : 230 
86 9 Red marl : < : A $ > ; PORE 
100 0 Very hard sandstone : : : A » 1338 
114 0 Red marl ; : ‘ - 4 : ; » LAO 
115 0 Very hard ‘cank rock’ . : ; : : iaied 
119 O Red marl : - ; c f F ‘ « “450 
124 0 Sandstone 50 
125 O Red marl LG 
127 O Sandstone 2 0 
128 9 Red marl £29 
130 0 Sandstone Ws 3) 
131 0 Red marl ) 
138 0 Sandstone if 20) 
170 O Red marl 6 C A Z 32°. 0 
190 0 Very hard sandstone, pebbles 20 0 
i 
