422 Newer Pliocene and Post Pliocene Deposits 



tainty to their species, thougli I presume they are all living forms ; 

 nor have I yet had time to examine all the specimens collected. 

 Figs. 19 to 22 represent some of the forms observed. Fig 1*7 ap- 

 pears to be a Rosalina. Fig. 18 is probably the Quinqueloculina 

 occidentalis of Bailey, obtained from the Atlantic soundings from 

 a depth of 20 fathoms. Fig. 21 may be the widely diffused Orbu- 

 lina universa, also found in the Atlantic soundings. Figs. 19 and 

 20 appear to be species of Polymorphina. 



I might add to this list of animal remains, a Lymnea, appa- 

 rently elodes, and a Cyclas, but I suspect tnem to be recent and 

 accidental. The same remark applies to shells of Ostrea borealis 

 occasionally found in the surface soil over the marine beds. 



Plantae. 



*Populus halsamifera — Balsam poplar. — In a nodule found by 

 Sheriff Dickson of Kingston, at Green's Creek, is a leaf of this 

 species. Another, less perfect, is in C. G. S. This is a northern 

 species widely difiused. 



*Potentilla Norvegica. — In a nodule from Green's Creek in 

 C. G. S., is a leaf which, according to Prof. Barnston, cannot be 

 distinguished from a cauline one of this species. This also is a 

 widely diffused northern plant. 



^ Thuja occidentalis — the common Cedar of Canada. — Bran- 

 ches in C. G. S., from brick clay pita near Montreal, show the 

 structure of this species. 



* Algae. — In nodules in the C. G. S. are at least three species. 

 These sea- weeds have been examined by Rev. A. Kemp, who 

 states that one of them is apparently a stem of Laminaria, and 

 that 'others are probably referable to the genera Fucus, Polysi- 

 phonia, and Porphyra, but that their state of preservation does 

 not admit of accurate specific determination. 



Nearly all the fossils in the above list have been obtained in 

 beds belonging to the plateau, elevated about 100 feet above the 

 St. Lawrence. Two of the species, Leda Portlandiea and Astarte 

 Laurentiana, are characteristic of the stratified clay, and these are 

 the only species which we have any reason to believe extinct. A 

 number of recent species belong to the littoral sand and gravel,, 

 and several of these occur at all heights up to 470 feet. A very 

 large number of species have been obtained from what I regard as 

 the intermediate deposit of Logan's farm near Montreal. 



