The merest Sunday-school exegesis, therefore, suffices to prove that, when the Mosaic writer in Genesis 1. 24 speaks of 'creeping things,' he means to include lizards among them. This being so, it is agreed on all hands that terrestrial lizards and other reptiles allied to lizards occur in the Permian strata. It is further agreed that the Triassic strata were deposited after these. Moreover, it is well known that, even if certain footprints are to be taken as unquestionable evidence of the existence of birds, they are not known to occur in rocks earlier than the Trias, while indubitable remains of birds are not to be met with till much later. Hence it follows that natural science does not 'affirm' the statement that birds were made on the fifth day, and 'everything that creepeth on the ground' on the sixth, on which Mr. Gladstone rests his order; for, as is shown by Leviticus, the 'Mosaic writer' includes lizards among his creeping things." [153] The crust of the earth is a book having for its pages strata that have, fortunately, been upturned for our perusal, and the story it tells must be true. The series of fossiliferous deposits which contain the remains of the animals which have lived on the earth in past ages of its history afford the evidence required concerning the order of appearance of the different species. As Professor Huxley says elsewhere [154]: "When we consider these simple facts, we see how absolutely futile are the attempts that have been made to draw a parallel between the story told by so much of the crust of the earth as is known to us and the story which Milton tells." Still, the story which Milton tells is in accord with the story which the Bible tells to those who are not given to playing conjuring tricks with the plain meaning of words. Finally, we must remember that "hundreds of thousands of animal species, as distinct as those which now compose our water, land, and air populations, have come into existence and died out again." "If the species of animals have all been separately created, then it follows that hundreds of thousands of acts of creative energy have occurred, at intervals throughout the whole time recorded by the fossiliferous rocks; and, during the greater part of that time, the 'creation' of the members of the water, land, and air populations must have gone on contemporaneously." [155]