TRANSPORT OF GRANITE AND OTHER ROCKS NEAR DUBLIN. 



371 



28. 0)1 the Probable Mode of Transport of the Fragments of 

 Granite and other Eocks which are found imbedded in the 

 Carboniferous Limestone of the Neighbourhood of Dublin. 

 By Y. Ball, Esq., M.A., r.KS.,r.G.S., Director of the Science 

 and Art Museum, Dublin. (Read March 28, 1888.) 



For some time I have been endeavouring to obtain specimens of the 

 limestone containing fragments of granite which were first found 

 nearly forty years ago in the neighbourhood of Dublin. The 

 quarries being now filled up and inaccessible, I followed on the 

 track suggested by having observed a specimen built into a garden 

 wall, and through the aid of Mr. H. B. White, M.E., I was enabled 

 to discover a wall in which such specimens occurred in considerable 

 abundance. The permission of the owner. Dr. E. P. Wright, having 

 been obtained, a fine series of blocks, in which the granite was 

 visible, was delivered at the Museum ; these, after they had been 

 trimmed and split by a stone-mason, afforded such a variety of 

 beautiful specimens that I have thought it would interest the Society 



Fragment of Carboniferous Limestone, with Fossils and Fragments 

 of Granite SfC, from the neighbourhood of Dublin. (JSTatural size.) 



Granite, b. Quartzite. 



Portions of Encrinite-stems. 



to exhibit a selection of them, as I believe comparatively few geolo- 

 gists have had an opportunity of examining anything of the kind. 



