292 
MR. CLEMENT REID ON EAST NORFOLK GEOLOGY. 
Upper 
Chalk. 
Soft chalk, usually grey-mottled, flints at 
120', 160' (black with very thin rind), 
161' (with cavity containing mealy 
powder full of sponge-spicules), 190' 
(imperfect spongy flint), 200' (black 
with thin rind) . \Ostrea lunata, charac- 
teristic of the highest chalk in Britain, 
was plentiful down to 150'J 
Thickness. Depth, 
feet. feet. 
103 
200 
The upper part of this section calls for no comment, the succession 
being identical with that seen in the cliff half a mile from the well. 
The Arctic Freshwater Bed contains numerous badly-preserved 
leaves of Salix polaris ; but I could find no other flowering plant. 
The samples I obtained were masses of felted moss and fine mud, 
resembling glacier mud. Mr. H. N. Dixon, F.L.S., to whom 
I submitted the mosses, reports as follows : — 
“The bulk of the material consisted of Hypnum turgescens, 
Schimp., which was recorded from Mundesley by Dr. Nathorst, in 
1872, from the same beds, in company with Salix polaris. The 
record was a specially interesting one, as H. turgescens no longer 
occurs in the British Isles, and while it has a wide distribution 
throughout the northern and temperate regions of Europe and 
North America it is distinctly a boreal moss, occurring in Greenland, 
and being perhaps nowhere so abundant as in Spitzbergen. 
“ The present material contained fragments of two additional 
species of Hypnum, hitherto unrecorded from Britain. The first 
of these is 11 . capillifolium, VVarnst., a moss with a distribution 
somewhat similar to that of 11. turgescens, being found in scattered 
localities from Siberia, through Central and Northern Europe to 
Vancouver and other localities in the northerly regions of the 
American continent ; it is not, however, at present recognised as so 
distinctly a boreal plant. A mere fragment of a stem was found, 
but the plant is so distinct that its identification scarcely admitted 
of a doubt ; and the determination has been verified by Benauld, 
a recognised authority on the group in question. 
“The second of the species mentioned above is II. Richardsoni, 
Mitt. ( = H. Breidleri, Juratz.), also verified by Benauld. This is 
closely allied to II. cordifolium, Hedw. and II . giganteum , Schimp., 
differing (as to vegetative characters) from the former in the 
narrower cells more abruptly enlarged at the basal angles, and from 
