362 
Mr. I^yell on the Boulder Formatioyi, 
tooth of rhinoceros ; 3. teeth of horse, the largest which 
Mr. Owen has ever seen fossil ; its longest transverse diameter 
is 1 inch 4-1 Oths, which, however, does not exceed thatoflarge 
living individuals; 4. bones of the ox ; 5. horns and bones of 
a deer of the size of the red deer, and the base of a shed 
horn of the same; 6. a smaller species of deer; 7. lower jaw 
left ramus of the beaver, a species larger than the living 
one and apparently distinct. Among other characters the 
anterior molar of the lower jaw has a much greater propor- 
tional breadth. 
The wood collected from the lignite bed. No. 4, is coni- 
ferous, and a cone which Mr. Simons procured from the same 
bed is certainly not the Scotch fir. Mr. R. Brown, who 
has examined it, has little doubt that it belongs to Firms 
abies^ or the spruce fir, a northern species not indigenous to 
Britain. 
Cromer is the most south-eastern point on this coast at 
which I observed yellow ferruginous crag; but a blue sand 
containing the same marine shells has been traced for more 
than a mile further in that direction by Mr. Simons ; and I 
have lately learnt from Mr. J. B. Wigham, that at Bacton 
Gap before mentioned, about miles distant in a straight 
line from Cromer, the hard ferruginous crag has been found 
immediately on the chalk. At that place, besides some of the 
usual shells, teeth of a small rodent [arvicola ?) have been 
found, as at Norwich. About a mile westward of Cromer 
the crag re-appears, and again at Runton, as will be presently 
mentioned. 
Freshwater strata of llunton between Cromer and Weybourne. 
— I shall mention here the only locality in which the fresh- 
water deposit has been seen beyond Cromer, namely, at 
about 2^ miles N.E. of that town, on both sides of West 
Runton gap. Here it contains many shells as at Mundesley, 
and its position is unequivocally at the bottom of the drift, and 
immediately over the fundamental chalk, which is covered with 
patches of crag as at Cromer. 
The section seen here on both sides of the gap consists, 
first, of drift, having its usual characters and irregularly curved 
stratification, and including small dispersed fragments of crag 
shells, its thickness being 60 feet and upwards. At the bot- 
tom of this the freshwater deposit occurs in patches of black 
earth from 3 to 5 feet thick, under which is a bed of reddish 
sand about 3 feet thick with freshwater shells in its upper 
part, and below this the crag in a discontinuous stratum less 
than a foot in thickness. The fundamental chalk contains 
large flints or paramoudrie. The lower part of the section 
