————— 
191 
Buckman, in 1858, remarks that the Jurassic Rocks up to 
the Great Oolite inclusive may be considered as having had no 
small share of attention bestowed on them by different observers. 
But the Forest Marble has met with too scant a treatment at 
our bands. The paper of Buckman to which I have frequently 
referred, and a short allusion by Witchell in a paper in our 
Transactions (Vol. VIII., p. 265), are almost all the authentic 
observations on the subject. Buckman makes the Great Oolite 
and Stonesfield Slate 110 ft. in thickness, proved by well sinking 
in the neighbourhood of Cirencester. But of the Forest Marble 
he gives no section of more than 16 ft., except at Kemble Junc- 
tion, where he makes it 39 ft. Hull, in his Geology of Chelten- 
ham, gives 45 ft. T had long ago come to the conclusion that 
60 ft. to 70 ft. more nearly represented the local development of 
this horizon, if it could be seen in its entirety. This section 
gives such a view, and bears out the conclusion. It further 
affords an opportunity for studying, with thoroughness, the 
junction beds of the Great Oolite and Forest Marble at this 
spot. The actual source of the top water supply, as well as the 
deeper storage remains a problem still to be worked out; but 
its solution is simplified by the facts furnished by this im- 
portant boring. 
There are still many aspects that have not been touched 
upon wherein the local Geologist may find this fortunate boring 
fertile in suggesting new directions for investigation, or throwing 
new light on uncompleted researches. 
