328 REPORTS ON THE STATE OF SCIENCE. 
undetermined width, and it appears as though this hollow is isolated and 
inclosed by the marl], though it is just possible that it may represent a 
portion of a filled-in valley or trench, the direction of which has not been 
traced. 
Scattered through the marl at various depths were angular or slightly 
rounded black flints in large numbers, and these in some cases formed a 
definite layer. Along with the flints were occasional pebbles of quartz 
and of sandstone (probably Carboniferous). None of these pebbles showed 
striz or other indication of glacial action. 
The overlying gravel was mainly composed of flint and chalk from the 
neighbouring Wolds, along with scattered fragments of quartz, sandstone, 
é&c. (like those found in the underlying marl), and G'ryphe and other fossils 
from the Lias. This gravel is the feather-edge of a wide fan which can 
be traced up to the mouth of a valley that drains from the Wolds at 
Market Weighton. In the thicker parts of this gravel, towards the 
mouth of the valley, other pebbles besides the above have been detected, 
including the well-known porphyrite which is characteristic of the upper 
part of the East Yorkshire drifts. The wide extent and depth of this 
gravel suggests that it has been spread out by floods from the melting ice, 
when the ice-margin abutted upon the eastern slopes cf the Wolds. The 
present valley appears to be too short to supply a stream powerful enough 
to spread a sheet of gravel of these dimensions. 
The thanks of the Committee are due to W. H. Fox, Esq., for per- 
mission to excavate ; to the tenant, Mr. Howes ; to Mr. W. H. Crofts ; 
and to the contractor, Mr. Thomas Moate. 
The Committee had contemplated work on another site in East York- 
shire, but have found difficulty in obtaining the requisite permission. 
Pending a final settlement of this matter, they ask for reappointment, 
with power to use the unexpended balance of their grant. 
South African Strata.—Interim Report of the Committee, consisting of 
Professor J. W. GREGORY (Chairman), Professor A. Youna (Secre- 
tary), Mr. W. ANDERSON, Professor R. Broom, Dr. G. 8. CorsTor- 
PHINE, Mr. Watcor Gisson, Dr. F. H. Hatca, Mr. T. H. 
Houtuanp, Mr. H. Kynaston, Dr. Moteneraarr, Mr. A. J. C. 
Motynevux, Mr. A. W. Rocers, Mr. E. H. L. ScHwarz, and 
Professor R. B. YounG, appointed to investigate and report on the 
Correlation and Age of South African Strata, and on the question 
of a Uniform Stratigraphical Nomenclature. 
THE Committee have continued the discussion of the subject by corre- 
spondence ; but as the members of the Committee are scattered through 
South Africa, India, and Europe, the work has been slow. It will there- 
fore be impossible to issue a report in time for the Leicester meeting, as 
had been hoped. 
Preliminary reports have been drawn up by the members of the Com- 
mittee, representing Cape Colony, the Transvaal, and Rhodesia. These 
reports have been submitted to all the members of the Committee, who 
have been asked to vote by post on the chief points at issue. It is hoped 
that a report will be prepared in time for the 1908 meeting of the 
Association. 
