190 
ft. in 
38.—Dark grey Rock, with black gran. veins Calcite... ee hee 
39.—Coarse grained reddish cream-coloured Oolite, varying in 
granulation Con 5 0 
40.—Bluish Rock, no shells ... 3 6 
41.—Coarse grained yellow O. 2 0 
42.—Fine grained yellow O.... 7 0 
177 6 
The fossils obtained in the first 15 ft. from the bottom of 
the shaft—45ft. to 62ft.—are chiefly Myacites recurva and 
Modiola bipartita; the rest, which undoubtedly are of the 
Forest Marble and Great Oolite, are still to be worked out. 
The horizon, which is not yet satisfactorily identified, is that 
of the Cornbrash. It may be necessary to break up the whole 
cores in that part of the section to define its exact position. 
There appears to be no further room for doubt that the 
retentive clays of the valley floor are those of the Kellaway’s 
Rock and Oxford Clay, and that a down-throw fault of not less 
than 100 ft. in vertical extent exists along probably both sides 
of the valley. In the future the local Geologist will look with 
eager interest for any opportunities that may arise for corrobo- 
rating the data here recorded, and for observing the extent of 
the area affected by this fault. 
Ligut THrown on Forest Marste. 
Besides what I will venture to call this slight addition to 
our knowledge of the stratigraphy of the South-Eastern Cottes- 
wolds, and its bearing on our water supplies, the section furnishes 
us for the first time in this district with a complete view of the 
Forest Marble Beds, on which a few considerations seem worthy 
of note. 
The many writers on the Geology of the Cotteswolds have 
generally travelled no further South-Eastwards than the edge 
of the Great Oolite. 
The writings of Murchison, Wright, Buckman, Hull, Lucy, 
and Wethered on the Inferior Oolite, and Lycett and Witchell 
on the Great Oolite, are familiar to the Cotteswold Club. 
