64 Origin of the British Flora. 
CRIANLARICH, PERTHSHIRE. 
Peaty loam with leaves of Arctic plants was found in a 
railway cutting, and a sample given to me by Mr. J. R. 
Dakyns yielded the subjoined species. The exact relation 
of the deposit to the old moraines is not perfectly clear, 
though the plant-bed would seem to be the newer of the 
two, and therefore Late Glacial. 
Dryas octopetala. Salix herbacea. 
Betula alba. reticulata. 
— nana. Empetrum nigrum. 
Salix repens. 
CROMER, NORFOLK. 
(Reid, ‘Pliocene Deposits of Britain’ Mem. Geol. 
Survey. 1890; Reid, ‘Geology of the Country around 
Cromer, Mem. Geol. Survey. 1882.) 
The Preglacial Cromer Forest-bed at Cromer itself is 
mainly of estuarine origin, and yields therefore only drift- 
wood and cones of Scotch and Spruce Firs. About 
three-quarters of a mile north-west of Cromer black mud 
belonging to the lower part of the Forest-bed is full of 
aquatic plants. The species are :— 
Ranunculus aquatilis, Potamogeton prelongus. 
Myriophyllum spicatum. Eriophorum angustifolium. 
Potamogeton lucens. 
A full list of plants from the Cromer Forest-bed of all 
localities will be found in the Table, p. 171. 
CROSSNESS, ESSEX. 
(Spurrell, ‘On the Estuary of the Thames and its 
Alluvium,’ Proc. Geol. Assoc. Vol. X1., pp. 210-230. 1889.) 
Two beds of peat or ‘submerged forest’ are here met 
with beneath the estuarine deposits of the Thames and 
underlying the Roman layer. The deposits are synchronous 
with those at Tilbury and at the Albert Dock. 
