ox KEISH CAVES, CO. SLIGO. 283 



the marrow — and a red deer's antler. With these were associated a stone 

 celt, bronze pins, and portion of an iron saw of ancient pattern. Beneatli 

 the above another stratum, consisting of cave-earth, was found, in which 

 were various remains of bear and deer, besides human teeth and charcoal. 

 The Committee therefore feel justified in continuing the excavations, 

 and ask for reappointment. The collections have been deposited in the 

 Dublin Museum, and are at present being worked out by the staff. 



Erratic Blocks of the British Isles. — Re^jort of the Committee, consistincj 

 of Mr. J. E. Make (GhairwMn), Mr. P. F. Kendall (Secre- 

 tary), Professor T. G. Bonney, Mr. C. E. De Kance, Professor 

 W. J. SoLLAS, Mr. R. H. TiDDEMAN, Eev. S. N. Harrison, 

 Mr. J. HoRNE, Mr. P. M. Burton, Mr. J. Lomas, Mr. A. R. 

 DwERRYHOusE, Mr. J. W. Stather, and Mr. W. T. Tucker, 

 appointed to investigate the Erratic BlocJcs of the British Isles, and 

 to taJce measures for their preservation. {Bratvn up hy the Secre- 

 tary.) 



The major proportion of the records for inclusion in this report relates to 

 Yorkshire, where an active organisation exists with working members in 

 all parts of the county, but especially in the East Riding, where the 

 members of the Hull Geological Society are doing admirable systematic 

 work. In furtherance of the objects of the Yorkshire Boulder Committee 

 an excursion to the Lake District was arranged by the Yorkshire Geo- 

 logical and Polytechnic Society. The area chosen for study was the country 

 round Keswick, which is so rich in rocks of pronounced petrological 

 characters which might be expected to have travelled over into Yorkshire. 

 The influence of this excursion is at once to be seen in the records of 

 erratics which have already been recognised. The peculiar rocks of 

 Eycott Hill and Carrock Fell have been found at Dimlington, and a well 

 characterised volcanic breccia occurring as boulders on Dunraail Raise has 

 been found at Hornsea, along with a specimen of the well known Ai-m- 

 both Dyke. 



A striated surface discovered on the southern slope of Skiddaw 

 has been reported to the Committee as the only convenient method of 

 recording an isolated but valuable observation. 



The reports from the coast tract of Yorkshire continue to yield new 

 stations for the very characteristic Norwegian Rhomb-porphyries and 

 Elseolite-syenites. The visit paid by the geologists of Yorkshire to the 

 Cheviots and some of its results were commented upon in the last report 

 of this Committee. Two facts stand out in the present series of records, 

 in the light of a more intimate acquaintance with the Cheviot rocks. While 

 we find that many observers note the great preponderance of Cheviot por- 

 phyrites over every other type of far-travelled stones, no example of the 

 Cheviot granite has ever been identified in Yorkshire. The Secretary 

 has long been impressed with the singularity of this absence of evi- 

 dence, and after examining the rock in situ has made careful search for 

 it at Filey, Bridlington, Whitby, and other places, where the porphyrites 

 abound. No clearly identifiable specimen could be found. A collection 

 was made of granitic pebbles from the shore at Whitby in order to get a 

 sufiicient series to base an opinion upon. Se\'enty of these stones have 

 been sliced, and the results of a preliminary examination are not 



