"As an example of the process of natural selection, Mr. Darwin tells us that "in North America, the black bear was seen by Hearne swimming for hours with widely- opened mouth, thus catching, almost like a whale, insects in the water;" and he adds, "even in so extreme a case as this, if the supply of insects were constant, and if better-adapted competitors did not already exist in the country, I can see no difficulty in a race of bears being rendered by natural selection more and more aquatic in their structure and habits, with larger and larger mouths, till a creature was produced as monstrous as a whale"!"