Yorkshire Naturalists’ Union: Annual Report, 1910. 65 
3rd—Saccharoid Limestone at White Force. Teesdale. 
By Mr. H. THELWELL, Sledmere— 
1st—Result of flood at Sledmere. (See July “ Natura- 
list ’’). 
2nd—Nearer ees (See July “ Naturalist ’’). 
By Mr4ee i Dyson — 
tst—Section shewing shell bed. New Joint Dock, Hull. 
2nd—Nearer view, shewing varieties of shells. 
3rd—Detail section. 
4th—Tree trunk from peat bed. New Joint Dock, Hull. 
(Practically 7m situ). 
The following were elected for Ig1I :— 
Chairman—Prof. Percy F. Kendall, M.Sc., Leeds. 
Convener—A. J. Stather, 224a Spring Bank, Hull. 
Representative on Executive—J. H. Howarth, J.P., Halifax. 
Representative on Committee of Suggestions—Godfrey Bingley, 
Leeds. 
Other Members—J. J. Burton, Nunthorpe ; J. H. S. Dickenson, 
Sheffield ; E. E. Gregory, Darlington ; H. E. Wroot, 
Bradford ; and C. Bradshaw, Sheffield. 
Yorkshire Glacial Committee.— Mr. Thomas Sheppard reports 
the occurrence of a boulder of Azgite syenite (Laurvikite) at Hessle, 
measuring 3 ft. by 2 ft. by 14 ft. It is the largest of its kind 
yet recorded, and was found resting on solid chalk, covered with 
glacial gravel and boulder clay. It has been removed to the 
Hull museum. 
Mr. Sheppard also records the occurrence of a “ striated 
pavement ”’ on the Lincolnshire shore of the Humber at South 
Ferriby. The tides have recently removed an accumulation of 
silt, near South Ferriby Hall, and exposed a bed of Neocomian 
Clay. In this is embedded a number of cake-like nodules, up 
to 14 feet in diameter. These nodules are all striated in a direc- 
tion parallel with the Humber, viz., from east to west. 
Mr. J. W. Stather reports that during the past year the in- 
terest in East Riding boulders has been renewed by the publica- 
tion of a work by Dr. V. Milthers, of the Danish Geological 
Survey, entitled ‘ Scandinavian Indicator-Boulders in the Quar- 
ternery Deposits.” In the memoir many well-marked Scandi- 
navian rocks are described, which occur as boulders in the glacial 
beds of Denmark, and maps are given shewing their distribution. 
The important bearing of this publication on the work of 
this Committee in the East Riding was at once recognised, and 
Dr. Milthers was communicated with. In response, he very 
kindly sent the Secretary a copy of his book, and a collection of 
the Indicator-boulders described therein. In looking over the 
Danish specimens, it was quite clear that many of them bore a 
strong family likeness to familiar Holderness types. Several 
1g1t1 Jan. 1, 
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