404 LAMPLUQH ; LARGER BOULDERS OF FLAMBOROUGH HEAD. 
and Lower Lias limestone. Magnesian Limestone is decidedly more 
plentiful in the drift of this locality than further south, but usually 
in fragments too small to pass into my list. As in Table No. 9, true 
granites chance to be absent though by no means rare in the locality. 
The curious flinty rock recorded last in the list is of a type rare in 
our drifts. It has been examined by Mr. Harker, and further 
particulars respecting it are given in Mr. Harker 's notes. 
Summary and Notes. 
Combining, now, for the purposes of comparison, all the above 
records and also those given in the previous parts of my paper, it will 
be found that the whole may be condensed into a table which will 
show at a glance the proportion of the various rocks at the different 
localities, as follows : — 
Table 12. comparative summary of the foregoing lists. 
Boulders over 1 foot in diameter. 
Origin. 
South Holdkrness, 
near Withernsea. 
500 boulders on the beach 
North Holderness, 
near Hornsea. 
100 boulders in the cliff. 
Flamborough Head, 
Sou:h Side. 
1100 boulders chiefly on 
the beach. 
Filey, 
near the Brigg. 
100 boulders in the cliff. 
Cavton Bay, 
South Side. 
100 boulders in the cliff. 
Robin Hood's Bay. 
100 boulders in the cliff. 
Whitby, 
North of Upgang. 
200 boulders in the cliff. 
Carboniferous LimeBtone (includ- 
ing also a few other Palaeozoic 
Sedimentary Rocks) 
per 
cent. 
22-8 
per 
cent. 
17- 
per 
cent. 
23-3 
per 
cent. 
13- 
per 
cent. 
14- 
per 
cent. 
13- 
per 
cent. 
30- 
Sandstones, Grit, Conglomerate, 
&c. (probably all, or nearly all, 
from Carboniferous or other 
Palaeozoic Rocks) 
14-4 
45- 
26-8 
15- 
25- 
28. 
18- 
Mesozoic Rocks (Jurassic Lime- 
stones and Sandstones, Chalk, 
&c.) 
22-1 
22- 
1- 
51- 
40- 
48- 
35-5 
Basaltic and other Eruptive Rocks 
37-3 
]4- 
43-2 
19- 
18- 
7- 
15-6 
Granite, Schist, Gneiss, &c. 
3-4 
2- 
5-7 
2- 
3- 
4- 
1- 
Total . . . 
100 
100- 
100- 
100- 
100- 
100' 
100- 
This summary shows that in spite of local differences there is a 
fundamental agreement among the lists. 
