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limestone beds, and those of the Bone bed series (at the base of 
the Lias) at Pylle Hill near Bristol, at Aust Passage, and at 
Penarth, also at the Uphill cutting on the G.W.R. The litho- 
logical resemblances were well marked ; and he recognized the 
“White Lias,” the “Cotham Marble,” the “Bone bed,” and the 
Gypseous clay bands of the S. country in the quarry at Linksfield. 
The paleontological evidence, moreover, supported his correlation 
of these beds. As to the Cornstone at Linksfield, on which the 
above mentioned beds rest, he thought they were of Triassic date, 
as he had observed on the flanks of the Mendips and elsewhere 
stone of a similar aspect belonging to the Trias and occasionally 
yielding remains of reptiles and fishes. In this paper he men- 
tioned his discovery of reptilian and mammalian teeth near 
Frome, in a fissure containing a Triassic deposit, and ventured to 
correlate them with the reptilian remains found at Lossiemouth, 
and therefore the probable Secondary age of the latter. This 
paper, especially the latter portion of it respecting the Triassic 
date of these sandstones, was probably considered too heretical for 
the then views of the Council and was consequently only inserted 
in abstract. 
In the following year (1861) his second paper “On the Zones 
of the Lower Lias and the Avicula Contorta Zone” appeared. 
Since the publication of Dr. Wright’s paper the preceding year 
“On the Avicula Contorta Zone,” the details of the Beer Crow- 
combe section had been more fully worked out, and he was now 
enabled to establish the exact relative position of that Zone. 
This was the more necessary as he considered that Dr. Wright 
had reversed the proper order of the Lower Liassic Zones, assert- 
ing that he had incorporated the White Lias of William Smith, 
Conybeare, Phillips and other geologists, with the Ammonites 
planorbis Zone. The explanation he gave of this error being that 
Dr. Wright had mistaken the cream colour of these beds in the 
section (a colour which is only superficia]) for the true White 
Lias below them, which had a creamy white fracture throughout. 
