77 
the Silkstone and Bamsley coals have been found by actual 
explorations to be. 
In particular instances, special modifications of the process 
may be required to explain the individual circumstances of 
each case, but some such general method seems quite com- 
petent to produce the modifications in the character of coal 
seams, of which examples have been given in the preceding 
paper. 
THE WORK AND PROBLEMS OF THE VICTORIA CAVE EXPLORA- 
TION. BY R. H. TIDDEMAN, M.A., F.G.S., OF H.M. GEOLO- 
GICAL SURVEY OF ENGLAND AND WALES. (PLATE V.) 
In the course of the past six years the Victoria Cave, near 
Settle, has become by name at least well known to Yorkshire- 
men, and has attracted the attention of many outside the 
county. Many notices and papers have been written upon 
it, but are mostly not easy of access, and scattered up and 
down in various Transactions of Scientific Societies. In his 
interesting work on Cave Hunting," Prof. B. Dawkins has 
given a valuable resume of what has been done up to 1873. 
But very much has been done since that time, and some 
valuable results have accrued which deserve to be put on 
record in connection with what has been previously done. 
Moreover, as a considerable portion of the funds employed in 
the excavation is derived from Yorkshire, it is only right 
that scientific Yorkshiremen should have an opportunity of 
knowing in what those funds have been spent, what have 
been the results so far, and what may be the problems await- 
ing solution in our further work. 
In giving a short summary of the work it will be neces- 
sary to recapitulate much that has been already published in 
various periodicals and other works. 
