SECTIONAL TRANSACTIONS.—C. 473 
Dr. E.S. Cobbold ; the Tremadoc Rocks of Shineton and the Ordovician 
Rocks of Evenwood with Dr. C. J. Stubblefield ; the Silurian Rocks of 
Wenlock, Ludlow, Leintwardine, and Onibury with Mr. Shirley and 
Dr. Whittard ; and the Ordovician and Valentian Rocks of the Onny 
and the northern Shelve country under the guidance of Dr. W. F. 
Whittard. ‘The excellent weather allowed of the carrying out of a very 
full programme, and satisfactory collections of rocks and fossils were 
made. 
Dr. E. 5. Coppo_p.—Notes on Comley Quarry, near Church Stretton, 
Shropshire. 
The geological history of this quarry may be sketched as follows : 
In 1878 Dr. Charles Callaway claimed the discovery of Cambrian 
(‘ Ffestiniog Beds ’) here, on the evidence of brachiopods. 
In 1888 Prof. Charles Lapworth announced that he had collected frag- 
ments of Olenellus, now relegated to the genus Callavia, and that the rocks 
were of Lower Cambrian age. 
In 1891 the same author described and figured a number of fragments of 
Olenellus (Holmia) callavei, as he named the species, together with a restora- 
tion of the trilobite so far as was then possible. At the same time he gave 
a preliminary description of a Paradoxides found by T. T. Groom (P. groomi 
Lapw.), which showed that the Middle and Lower Cambrian were in 
juxtaposition at this spot. 
In 1892 Mr. John Rhodes (senior) made a considerable collection for 
H.M. Geological Survey, under Prof. Lapworth’s direction. 
Since that time many geologists have visited the area and numerous 
fragments have been collected. 
In 1907, with the advice and help of Prof. Lapworth, and with grants 
made to me by the Committee of the Association for the excavation of 
critical sections among the Paleozoic rocks, I commenced a series of 
excavations in the area, the principal results of which have appeared in the 
Annual Reports of the Association and in the Quarterly Yournal of the 
Geological Society. 
Quarrying has now been abandoned, and much of the detail is lost under 
débris and vegetation. I have, therefore, sketched a section of what was to 
be seen some twenty-five to thirty years ago, in order to supply the present 
deficiency. 
The two divisions, Middle and Lower Cambrian, meet at the darkly 
shaded line on the section representing the impersistent Lapworthella Lime- 
stone, which by its fauna is relegated to the Lower Cambrian. To the east 
of this we have the coarse grits of the Middle Cambrian, seen in the remains 
of the quarry face in the south corner and in a depression in the floor, at the 
eastern end of which they graduate by interpolation into fine shale, all 
dipping about 70° to the east. An initial deposit, varying greatly from 
place to place, occurs at the base. 
In the trench seen to-day this deposit takes the form of a very dark, 
gritty breccia ; two or three yards farther on it appeared as a black phos- 
phatic skin adhering to the top of the Lapworthella Limestone, and contained 
Dorypyge laket Cobbold, Paradoxides fragments, now referred to P. 
elandicus Sjégren, and other fossils. 
To the west of the dividing limestone the Lower Cambrian is seen 
apparently in close conformity with the grits and shales above mentioned. 
The beds consist of (i) three grey limestones—in descending order the 
