Deposits containing Fossil Plants 63 
Thalictrum flavum. 
Ranunculus. 
Nuphar luteum. 
Hydrocotyle vulgaris. 
Cénanthe. 
Solanum Dulcamara. 
Atriplex patula. 
Alnus glutinosa. 
Ceratophyllum demersum. 
Stratiotes aloides. 
Sparganium ramosum. 
Potamogeton lucens. 
trichoides. 
Zannichellia palustris. 
Scirpus pauciflorus. 
lacustris, 
Eriophorum angustifolium. 
Carex. 
COWDEN GLEN, RENFREWSHIRE. 
(Geikie, ‘Great Ice Age,’ 3rd edit., pp. 102-104. 1894; 
Bennie, ‘On Things New and Old from the Ancient Lake 
of Cowdenglen, Renfrewshire, Trans. Geol. Soc. Glasgow, 
1891, pp. 213-225.) 
This deposit has given rise to much discussion, Pro- 
fessor James Geikie, Mr. Bennie, and others maintaining 
that the peat is Interglacial and interbedded between two 
masses of boulder-clay. Some writers, however, consider 
the upper boulder-clay to be merely a landslip. The plants 
have a recent appearance, and include the Opium Poppy, 
a species cultivated in Neolithic times. I think it safer, 
therefore, not to consider them older than the Neolithic 
period. 
Ranunculus aquatilis. 
Flammula. 
Papaver somniferum. 
Viola. 
Montia fontana. 
Rubus Idzus. 
Poterium officinale. 
Hippuris vulgaris. 
Myriophyllum spicatum. 
Galium palustre. 
Menyanthes trifoliata. 
Pedicularis palustris. 
Galeopsis Tetrahit. 
Ajuga reptans. 
Polygonum lapthifolium. 
Rumex crispus. 
Betula alba. 
Corylus Avellana. 
Salix repens. 
Pinus sylvestris. 
Alisma Plantago. 
Potamogeton perfoliatus. 
— pusillus. 
———___-—  pectinatus. 
Scirpus lacustris. 
pauciflorus. 
Carex rostrata. 
Isoetes lacustris. 
Chara. 
