(356/2.

The late Sir J.W.Dawson wrote a review (signed J.W.D) of Hooker's Arctic paper which appeared in the "Canadian Naturalist," 1862, Volume VII., page 334.

The chief part of the article is made up of quotations from Asa Gray's article referred to below.

The remainder is a summary of geological arguments against Hooker's views.

We do not find the accusation referred to above, which seems to have appeared in a lecture.) No doubt there was a subsidence of N.America during the Glacial period, and over a large part, but to maintain that the subsidence extended over nearly the whole breadth of the continent, or lasted during the whole Glacial period, I do not believe he can support.
I suspect much of the evidence of subsidence during the Glacial period there will prove false, as it largely rests on ice-action, which is becoming, as you know, to be viewed as more and more subaerial.