secretary’s report. 
279 
1854 - 5 , 1858 - 9 , 1860 , 1862 , 1864 - 5 , 1865 - 6 , 1867 , 1868 , 1869 , 
1870 , 1871 , 1875 , 1876 , 1877 , 1878 , 1879 , 1880 , 1881 , 1882 . 
During' the past year the quarrying- operation in the immediate 
vicinity of the Rayhill Fissure have been of such a nature as to 
prevent the progress of the work of the Committee appointed to 
superintend its exploration. There is every probability that, with 
the approach of next spring, the whole of the intervening limestone 
will have been cleared away, and that active operations may be again 
commenced in the Fissure. 
The society acknowledges, with much pleasure, its indebtedness 
to Mr. W. H. Dalton, of H. M. Geological Survey, for his kindly 
rendered assistance in the compilation of the Bibliographical lists of 
works published during the past year, and which are appended. 
