540 The British Association. [October, 
the hyena, of the bear, some flint instruments, and a re- 
markable quartzite discovered in the cave during last year. 
The report contained an account of the explorations carried 
during the year. At the end of July, 1878, the two 
reaches only had been explored. Its floor was found to be 
a complete pavement of blocks of limestone, some of con- 
siderable size. The chamber measured about 30 feet from 
north to south ; from 7 to 13 feet from east to west, and 
from 8 to 13 feet from the roof to the bottom of the cavern. 
The only objects of interest found in the chamber were four 
pieces of bone, which occurred at depths exceeding a foot, 
and a lump of oxide of manganese. The recess near the 
junction of the two reaches was, in proportion to its capacity, 
much more productive. 
Mr. Isaac Roberts, F.G.S., read a very instructive paper 
“ On Experiments on Filtration of Sea Water through Tri- 
assic Sandstone.” 
Mr. W. Pengelly, F.R.S., read a paper “ On the Relative 
Ages of the Raised Beaches and Submerged Forests of 
Torbay.” 
Mr. V. Ball, M.A., gave a description of a new Geological 
Map of India which is soon to be published, with a manual 
of the geology of that country. Mr. Ball stated that his 
investigations in India had converted him to the glacial 
theory as exemplified in the boulders he had seen. 
Professor Williamson, Owens College, Manchester, read 
a paper with regard to coal measures. 
The President gave a short account of some fossils from 
the Northampton Sands, which, he said, formed an important 
part of the oolites, which had been described in papers pub- 
lished by the Geographical Society of London. 
Mr. J. Nolan, M.R.I.A., read a paper “ On the Meta- 
morphic and Intrusive Rocks of Tyrone.” 
Mr. Sterry Hunt, LL.D., F.R.S., read a paper “ On the 
Origin and Succession of Crystalline Rocks.” The author’s 
researches into the composition and structure of the crystal- 
line rocks, conjoined with his studies of the chemistry of 
natural waters, led him, in i860, to rejeCt the hitherto re- 
ceived view of the epigenic or metasomatic origin of serpen- 
tine, steatite, chlorite, and similar rocks, and to maintain 
their derivation from silicates formed by chemical processes 
and deposited in the water of lakes or seas. This view he 
soon after extended to the various other exceptional rocks 
