LAMPLUQH : LARGER BOULDERS OF FLAMBOROUGH HEAD. 403 
Table 10. 100 boulders in the cliff near robin hood's bay. 
Per cent, 
10 Carboniferous Limestone. 
28 Sandstone, probably Carboniferous. 
2 Limestone, probably Magnesian. 
1 " Brockram "-conglomerate (Permian). 
48 Jurassic Limestone, Sandstone, and Shale. 
7 Basaltic rocks. 
1 Porphyritic Felstone. 
2 Granite (one from Shap Fell). 
1 Gneiss. 
100 
Whitby. 
The list which follows was compiled in the cliff at Upgang, near 
Whitby, about seven miles north of the last station. 
Here once more we find that the drifts have accumulated to a 
great depth in a pre-glacial trough, and the coast is edged with high 
cliffs of boulder clay. 
Two hundred boulders were catalogued, the greater number 
occurring in the lower Boulder-clay ; and, as usual, the local rocks 
were almost entirely confined to this division. 
Table 11. — 200 boulders in the cliff near whitby. 
Per centum. 
= 26-5 
53 Carboniferous Limestone .. . 
36 Sandstone and Grit, probably Carboniferous 
6 Magnesian Limestone 
1 Brockram "-Conglomerate 
21 Sandstone*; doubtful, but possibly Jurassic 
oO Liassic Limestone, and Shale 
31 Basaltic rocks ... 
1 Porphyritic Felstone 
1 Brecciated flinty rock 
= 18- 
I 
f = 35 
= 10-5 
= 25- 
= 15-5 
200 100 
The Secondary rocks in this table included numerous masses of 
the hard " Jet-rock " hale (Upper Lias), besides fragments of Middle 
