VOL. XIX. (i) DEEP BORING AT SHIPTON MOYNE 
3.5 
“ Passage Beds.” — At 152 feet 2 inches the yellowisli 
oolitic limestones ended, and the grey and dark-grey — some- 
times almost blackish — rocks commenced. 
At 265 feet, Fullers’ Earth — without any hard layers — 
was encountered and penetrated to a depth of 21 feet 6 inches. 
Between these two horizons is a very variable series of 
deposits 92 feet 10 inches thick. 
In the series from 152 feet 2 inches to 214 feet 4 inches — 
a thickness of 62 feet 2 inches — limestones (often hard and 
sandy) predominate over the clays : in that from 214 feet 
4 inches to 265 feet, clays, shales, and marls (with an abundance 
of specimens of Ostrea acuminata Sow.) predominate over the 
limestones, which are usually comparatively thin, blue and 
shaly — the abundant fossil being again Ostrea acuminata 
Sow. 
The beds from 152 feet 2 inches to 214 feet 4 inches may 
be designated “ Passage Beds,” and are thicker by 14 feet 2 
inches than the similarly-designated beds at Kemble, and by 
17 feet 2 inches than those proved in the Badminton Tunnel. 
It is interesting to note that the rock between 105 feet 
6 inches and 106 feet down at Kemble (between 2 feet and 2 
feet 6 inches of the base of the “ Passage Beds ” there) contains 
little irregularly-shaped bodies ; that rock with similar little 
bodies was obtained from the bore-hole at Lewis Lane, Ciren- 
cester ; and that whilst the rock at Shipton Moyne between 
206 feet and 212 feet is very coarsely oolitic, that between 212 
and 213 feet — within i foot 4 inches of the base of the 
” Passage Beds ” there — is also ” pisolitic.” 
Fullers’ Earth. — All the information that is necessary 
concerning these beds is given on pages 49 and 51-2 ; but it may 
be as well to emphasize the fact that the unfossiliferous nature 
of the marls below 265 feet was very noticeable. 
I am much indebted to the late H. Rofe, M.I.C.E., the 
Consulting Engineer, and to Mr Henry Marten, A.M.LC.E., 
for affording me every facility for examining the cores and for 
supplying me with any information that I required. 
