1866.] DAWSON — ON POST-PLIOCENE PLANTS. < 3 



8. Potamogeton pusillus. Quantities of fragments which I 

 refer to this species occur in nodules at Green's Creek. They 

 may possibly belong to a variety of P. hybridus which, together 

 with P. nutans, now grows in the river Ottawa, where it flows 

 over the beds containing these fossils. 



9. Caricece and Graminece. Fragments in nodules from Green's 

 Creek, appear to belong to plants of these groups, but I cannot 

 venture to determine their species. 



10. Equisetum sdrpoides Michx. Fragments in nodules, 

 Green's Creek. This is a widely distributed species, occurring 

 in the Northern States and Canada. 



11. Fontlnalis. In nodules at Green's Creek there occurs, 

 somewhat plentifully, branches of a moss apparently of the genus 

 •Fontinalis. 



12. Aljce. With the plants above mentioned, both at Green's 

 Creek and at Montreal, there occur remains of sea-weeds. They 

 seem to belong to the genera Fucus and Viva, but I cannot deter- 



Fig:. 5. Frond of Fucus. 



mine the species. A thick stem in one of the nodules would 

 seem to indicate a large Laminaria. With the above there are 

 found at Green's Creek a number of fragments of leaves, stems 

 and fruits, which I have not been able to refer to their species, 

 principally on account of their defective state of preservation. 

 Additional specimens may possibly in time resolve some of them. 



