SOURCE: A review of Last Words on Evolution, in North American Review, Vol. 186, September, 1907, pp. 130-34.

In the following essay, Gauss combines a review of Last Words on Evolution with an assessment of Haeckel's career.

Ernst Haeckel has now reached the biblical years of three-score and ten, and tells us that his age will prevent him from again appearing in public. The pronouncement has its pathos, for the veteran professor has for nearly half a century carried on in Germany the battle for Darwin and Evolution. He has been perhaps its ablest champion; he has certainly been its boldest. Since the beginning of that great intellectual combat in Germany, he has made himself the target for the shafts of its opponents. They have attacked his science, and with the peculiar bitterness engendered by that conflict, they have attacked his personality. Unlike the gentle Darwin, he could not allow...