308 adamson: the Yorkshire boulder committee. 



THE BOULDERS OF ROBIN HOOD'S BAY. 

 REPORT No. i— INLAND BOULDERS. 



S. CHADWICK, F.G.S., and C. BROWNRIDGE, F.G.S. 



Group No. i. — On each side of the principal street running 

 through the village of Baytown are the following boulders, which 

 have been removed from the adjacent Boulder Clay resting on the 

 Lower Lias. Twenty-four of Whinstone varying from 2 ft. 7 in. x 

 1 ft. 9 in. x 1 ft. 2 in. to 1 ft. i| in, x 11A in. x 7 in. ; sub-angular. 

 Two of Sandstone (possibly Moor Grit), 1 ft. 1 in. x 1 ft. x 10 in. 

 and 2 ft. 1 in. x 1 ft. x 1 ft. 5 in.; sub-angular. One of Gritstone, 

 1 ft. 9 in. x 1 ft. 5 in. x 9 in. ; rounded. Three of Mountain Lime- 

 stone, 1 ft. 7 in. xi ft. 4 in. x 1 ft. 3 in., 1 ft. 6 in. x 1 ft. 3 in. x 

 10 in., 2 ft. 2 in. x 1 ft. 8 in. x 10 in.; all sub-angular; one of 

 Uolerite, 2 ft. 2 in. x n in. x 1 ft. 10 in. ; rounded. 



Group No. 2. — Lying in the bed of the stream that passes 

 through the village are three boulders, 2 ft. 8 in. x 2 ft. 1 in. x 

 1 ft. 6 in. ; Sandstone (possibly Moor Grit) ; sub-angular. 4 ft. 1 in. 

 x 2 ft. 6 in. x 1 ft. 2 in. ; Felstone ; rounded to sub-angular. 



1 ft. 10 in. x 1 ft. 6 in. x 8 in. ; Sandstone or Quartzite ; rounded. 



Group No. 3. — Lying in the valley of Mill Beck, about half a 

 mile south of the village are four boulders, 1 ft. 3 in. x 1 ft. xn in. ; 

 Sandstone (possibly Moor Grit) sub-angular. 3 ft. 4 in. x 2 ft. x 1 ft.; 

 Sandstone (possibly Moor Grit) ; rounded. 1 ft. 7 in. x 1 ft. 2 in. x 

 9 in. ; Gneiss or Gneissose Granite ; sub-angular. 3 ft. 6 in. x 



2 ft. 8 in. x 2 ft. 2 in. ; Whinstone ; sub-angular. 



The boulders of the second and third group have been exposed 

 by the washing away of the Boulder Clay, and in some cases have 

 evidently rolled down from slightly higher elevations to their present 

 positions. Specimens of the above boulders have been submitted 

 to and determined by Prof. Green, F.R.S., Oxford. 



REPORT UPON SHAP GRANITE BOULDERS AT 

 MARTON-CUM-GRAFTON. 



Rev. E. P. KNUBLEY, M.A., 

 Rector of Stavehy ; Joint Hon. Secretary to Yorkshire Naturalists Union. 



At Marton-cum-Grafton, three miles S.E. by S. from Borough- 

 bridge are two Shap Granite Boulders. 



No. i measures 3 ft. 3 in. x 3 ft. 1 in. x 2 ft. 6 in. Greatest girth, 

 9 ft. 9 in. 



Naturalist, 



