434 
THE LAST DECADE. 
same author contributed a paper descriptive of fossil trees found in 
the lower coal measures at Clayton, near Haliftix, one of which had 
been photographed, and was issued to the members of the Society 
for that year ; the specimen has since been renioA^ed to Owen's 
College, Manchester, where it has been set up in the museum as it 
was obtained from the quarry, under the direction of Professor 
W. C. Williamson. 
Mr. S. A. Adamson described sections which had been revealed 
by the excavation of a gas-holder tank at Old Mill, near Barnsley, 
consisting of alternations of silt, gravel, and stony clay, resting on 
the shale of the Middle Coal-Measures. The gi avels, besides local 
rocks, contained some boulders of basalt and a felspathic stone, and 
in the uppermost parts had been discovered vegetable accumulations 
which included pieces of oak, hazel nuts and leaves, as well as a 
freshwater bivalve shell, and the remains of a beetle. In the same 
gravel a remarkable implement composed of mica-schist, smooth, and 
having at the sides peculiar groovings which had evidently been pro- 
duced by man, was found. It has every appearance of having been 
used to sharpen some implement. 
Mr. John Holmes, of Roundhay, read a learned and elaborate 
paper on the pre-liistoric remains of Rumbalds Moor. The earth- 
works on Baildon Common, the cairns known as the big and little 
Skirtfull of Stones, and the Lanshaw Delves were described, and 
records of their investigations were given. The greater part of the 
paper, however, was taken up with a description of the cup and ring 
marks which cover several large stones and rock surfaces on the 
Illcley and Addingham moors, and the origin and use of these 
peculiar rock markings were discussed with some deta^'l, and compared 
with similar carvings in several other parts of the world. 
In the proceedings of the following year notes on the discovery 
of bronze implements in the West Riding were contributed by the 
same author, and Mr. Thomas Boynton also gave a list of bronze 
implements discovered in the East Riding, nearly all of which are in 
his private collection. 
The Rev. J. Stanley Tute recorded the occurrence of a Lingula 
in the black shale occurrtiig below tlie Follyfort grit which had been 
