136 REPORTS ON THE STATE OF SCIENCE.—1912, ' 
for the Committee's work, and so obviate a large amount of preliminary 
discussion. This list had been prepared with special reference to the 
collections in the Sedgwick Museum and the local needs of the Cam- 
bridge student, but when this is taken into account it was felt that it 
would be a valuable aid to the work of the Committee. Accordingly, 
by the kindness of Professor T. McKenny Hughes and Mr. H. Woods, 
copies of the ‘ Catalogue of the Fossils in the Students’ Stratigraphical 
Series ’ of the Sedgwick Museum were circulated to the Committee and 
specialists along with the circular letter. Up to the present a number 
of replies have been received, but others are still outstanding. It is 
hoped that during the next year the complete lists may be received and 
embodied in a general list of fossils for the consideration of teachers 
of geology to whom it will be submitted. 
The Committee ask to be reappointed with a grant of 51. 
The Excavation of Critical Sections in the Paleozoic Rocks of 
Wales and the West of England.—Report of the Committee, 
consisting of Professor LapwortH (Chairman), Mr. W. G. 
FEARNSIDES (Secretary), Dr. J. EK. Marr, Professor W. W. 
Watts, and Mr. G. J. WILLIAMS. 
Fifth Report on Excavalions among the Cambrian Rocks of Comley, 
Shropshire, 1911, by E. S. Cospsorn, F'.G.S. 
I pevorep the grant made in 1911 to additional excavations in two parts 
of the area: (A) South of Robin’s Tump ; (B) in the Comley Brook, where 
it has cut a little gorge between Dairy Hill and Hill House Ridge. The 
exact positions of all these excavations are recorded on my own field map, 
and the majority of them can be identified by the references given below 
to the map published with my report to the Sheffield meeting (1910). 
(A) Excavations Sourm or Rostn’s Tune. 
Hacavation No, 44, Westwards from the Spring. 
It was known that Bala Grits occurred at some little distance to the 
west of the Spring, where Excavation No. 43 (Portsmouth Report) had 
proved the existence of shales with Orthis (Orusia) lenticularis (Wahlen- 
berg). In the hope of finding higher horizons of the Cambrian a number 
of trial-holes, 3 to 4 feet deep, were opened at intervals along a direct 
line between the two points. Shales similar to those at the Spring were 
proved for about 50 yards, but beyond this distance fragmentary green 
sandstone, referable to the Lower Coniley Sandstone and, in one place, 
yielding obscure specimens of Hyolithus, occurred in every opening until 
the yellow Bala Grits were encountered. 
Though the actual line of contact between the shale and the sand- 
sione was not observed, it is clear that they are separated by a fault at 
this point as well as close to the Spring, and the trace of this fault can 
be laid down on the map. 
