DAVIS: EXPLORATION OF THE RAYGILL FISSURE AT LOTHERSDALE. 281 
varying from 6 inches to several feet in thickness, with slight alter- 
nating layers of sand and gravel, and occasionally fragments of grit 
and limestone at the bottom. A few remains of mammals have been 
found near the entrance to the horizontal portion of the fissure 
similar to those already recorded. 
A very large sum would be required to investigate the remaining 
length of the fissure, because the work will be increasingly laborious 
and the consequent expense proportionately heavy; and as there is no 
probabiHty indicated in the work so far that the already large series 
of animal remains will be greatly, if at all, increased, it is not thought 
advisible to proceed with the work at present. Sometime during next 
year the proprietors intend to drive a cross cut to the Barytes vein, 
behind the boiler house, and it is expected that this cutting will open 
up the fissure ; should this be the case, it will be interesting to note 
the direction and contents of the fissure at that place. 
In conclusion, it is desirable to render thanks to Mr. Spencer, 
and latterly to his son, the proprietors of the Raygill Quarries, for 
their permission to carry on the work, and for the uniformly kind and 
courteous manner in which they have always placed themselves at the 
disposal of the Committee ; and to Mr. J. Todd, the manager of the 
works, for the trustworthy and careful manner, combined with much 
skill, in which he has superintended the operations of the workmen 
employed. 
ON THE DISCOVERY OF A STONE IMPLEMENT IN ALLUVIAL GRAVELS AT 
BARNSLEY. BY SAMUEL A. ADAMSON, ESQ., F.G.S. 
Some good sections were revealed by the excavation of a gas-holder 
tank, at Old Mill, Barnsley, and were visited by the Council of the Leeds 
Geological Association, by the invitation and under the guidance of Mr. 
J ohn Hutchinson, the Engineer to the Barnsley Gasworks. The section 
on the east side shows the following strata in descending order : — A, 
silt; B, gravel; C, stony clay; D, sand; E, gravel; F, fine blue clay; 
G, slightly weathered shale (middle coal measures). The section on 
