276 The American Geologist. Octobar, 1S97 
Dr. Ami also read a paper by Dr. G. F. Matthew on the distribution 
of certain species in the Cambrian rocks. The author stated that Ba- 
tliyuriscus, a Middle Cambrian ^'enus in Montana and Nevada occurred 
with OleneUus in eastern North America and is vei-y closely allied to Do- 
lichoinetopus of the upper Paradoxideshed of Sweden and eastern Can- 
ada. With it occurs Doi'yjjyge, a Middle Cambrian form in Montana., 
but also found in the OleneUus beds of eastern North America. Miero- 
disens ranges from the OleneUus fauna to the upper Paradoxldes bed. 
Agnostus in the two forms Icevigati and hrevifrontes also ranges from 
the OleneUus to the upper Paradoxides horizon. 
"It is difficult," said Dr. Matthew "to understand how OleneUus can 
be at the base of the Cambrian and yet be found in the company of so 
many forms of the Middle Cambrian fauna." 
Dr. Ami also read a paper by Mgr. Laflamme of the Laval university 
on the displacement of the river St. Anne in Quebec by the great land- 
slide of April, 1894. 
Prince Krapotkine presented a paper on the "Asar of Finland," writ- 
ten he said when he was confined in a St. Petersburgh prison in 1871 
and 1876 and left behind him when he escaped. He only received it re- 
cently through the intervention of the Russian Geographical Society. 
In the absence of its author the paper by Dr. Chalmers on the pre- 
glacial decay of rocks in eastern Canada, was read by title. We under- 
stand that its purport was to point out instances in which weathered 
rocks of various dates are buried under boulder clay and so preserved. 
Mr. Coleman discussed the interglacial beds of the Don valley and 
Scarborough Hights. In the former seation is seen a lowest till lying 
on Ordovician shale (Hudson River). Then follow eighteen feet of sand 
and clay with mussel and other shells, leaves and pieces of wood. Some 
of the former are of species now found farther south. Above this is a 
stratified clay and sand from which have been obtained a caribou horn 
and some remains of insects and plants belonging to a colder climate 
than the present. This is best seen at Scarborough Hights where it 
rises 148 feet above the water. 
These beds were deeply eroded before the next till was laid down up- 
on them and above this follows another series of fossiliferous interglacial 
beds to a hight of 240 feet and over these is a third till. 
During the deposition of the middle and upper till the water stood 
from 260 to 300 feet above the present level of lake Ontario. 
Mr. Bay ley Willis spoke on the drift of Puget sound. On the slopes 
of the Cascade range drift deposits occur, he said, up to 1700 feet above 
the sea. The materials are largely granite but numerous erratics of 
Tertiary volcanic rocks indicate Mt. Tacoma as their place of origin. 
Prof. T. C. Chamberlin discussed at considerable length several hy- 
potheses bearing on climatic change, atmospheric conditions, and also 
the succession of ice-sheets in the Pleistocene. 
Mr. H. B. Woodward spoke on the English chalky boulder-clay and 
Dr. Spencer on the continental elevation of the glacial era. 
Papers were also presented by Prof. C. H. Hitchcock on the southern 
lobe of the Laurentian ice-sheet, and Prof. Shaler on the origin of 
drumlins. 
