187 
anticipated. It would also explain Mr Taunton’s chisel-boring 
section, as the samples of triturated Kellaway’s Rock and Oxford 
Clay would sufficiently closely resemble Forest Marble to be 
taken for it. Mr Taunton was good enough to send his speci- 
mens at once to the Geological Survey at Jermyn Street, and 
their determination by Mr G. Sharman, which Mr Horace B. 
Woodward was good enough to send me, confirmed most fully 
my opinion of them. They were the following :— 
feet 
Avicula inequivalvis ... sib ... 80-34 
Ostreea or Gryphea (young Founs) wae ... 30-34 
Myacites recurva... Hee lee eta ie On 
Ammonites macrocephalus bias ze ses= 0, 
Belemnites Oweni ee see ae ooo gate 
Modiola bipartita wis fe “ge ... 39-45 
Waldheimia ornithocephala_.... oe AB 
Terebratula intermedia, fragment 
All are known from Lower Oxfordian—Oxford Clay and Kella- 
way’s Rock. The lithological character of the rock also favoured 
this view, as Mr Woodward pointed out. 
At about this time it was in contemplation to make an 
extensive diamond boring from the bottom of the new shaft at 
Lewis Lane, and as this would be sure to confirm or modify my 
conclusions, we agreed to wait for such revelations as a study 
of the cores would afford. 
In July last the boring (8}” diam.) began, and I watched 
daily with keen interest the progress through the alternating 
clays and blue and black limestones, and at 128 ft. to 130 ft. 
was rejoiced to see the fine cream-coloured freestones of the 
_ Great Oolite. The boring was carried on to a total depth from 
the surface of 177 ft. 6in., and for several reasons, which need 
not here be related, was abandoned. It may be noted that 
some short time afterwards a plentiful supply of water filled 
the well, and has since continued very regular. The task now 
remained to work out systematically the cores brought up 
by the borer. These represent 132 ft. in depth, and weigh 
about eight tons. The long and often repeated examination of 
these cores would have been impossible without not merely the 
G2 
