I quite agree with this author that the evidence is conclusive as to the climate and food being "all the animals could have desired," and that they must have "had their choice of the best." But it seems to me that in following out their theory these authors have not left the poor creatures very much to choose from. For as the inevitable result of their theory in arranging the plants as well as the animals in chronological order according to the percentages of living and extinct forms, they have already disposed of, and consigned to the "early" Tertiaries, etc., all the probable vegetation on which these animals lived, and thus have nothing left on which to feed the horse and bison, rhinoceros and elephant, etc., away within the Arctic Circle, except the few miserable shrubs and lichens which now survive there. But this strange, inconsistent notion of Dana's that the so-called Glacial phenomena lie in between the warm Tertiary and the equally warm "Champlain period," is easily understood as the survival of the notion, so tenaciously held even later than the middle decades of the nineteenth century, that Man was =not= a witness of any of the great geological changes. When the evidence became overwhelming that Man lived while the semi-tropical animals roamed over England, the "Glacial period" still remained as a sort of buffer against the dangerous possibility of extending the =human= period back any further. I am not aware that this venerable scientist ever became quite reconciled to the idea of "Tertiary Man," though in his "Manual" he mentions a few evidences in favor of this now almost universally accepted opinion. As for the real teachings of the Drift phenomena there is no need of explanation here. At the very most they are confined to a quite limited part of the northern hemisphere, there being no trace of them in Alaska, nor on the plains of Siberia, where now almost eternal frosts prevail.[76] In fact they are practically confined between the Rocky Mountains and the Missouri River on the west, and the Ural Mountains on the east; and with a little common sense infused into the foundation principles of the science we will cease to be tormented with a "Glacial Nightmare." Much of the Drift phenomena with the raised beaches are certainly =later= events than most of the other geological work, but are inseparably connected with the general problem in their explanation. Even from the ordinary standpoint, I am not aware that the elaborate argument of Howorth has even been satisfactorily answered. Indeed, I feel almost like saying that this writer's various contributions to the cause of inductive geology mark the beginning of the dawn.