But you will say, perhaps, that we have forgotten one kind of animal, for we have not said a word about Pigs. Well, Piggie has not been forgotten; but it seems difficult for him to find just his own place among the classes of Mammalia, for he is like several of the quadrupeds in some particular, but unlike any one of them altogether. You cannot put him with the Ruminants, and yet he has cloven feet; he has the same number of teeth as the horse, and his snout is rather like, in a small way, the trunk of the elephant; then, in his wild state, he might almost be reckoned among the beasts of prey, for the wild Boar, with its terrible tusks, is a most formidable creature to encounter. Of all the families of the Mammalia, that of Rats and Mice is the most numerous. There are two kinds of rats, the black and the brown. I do not know to which kind Willie's "Ratto" belongs, but I have heard many stories of his clever tricksy ways, and of how well he knew his name, and obeyed his master. A rat, however clever, is not an animal which I should care to pet and tame; but I know a very interesting story of one which seemed to be the means of taming a poor man who was so wild and miserable that he cared for nobody. This man had been transported for life, for some of his wicked deeds, and he was so savage that even the companions who worked with him were afraid of him, and hardly dared speak to him. Once, as he was at work in the woods near Port Philip, felling trees, with a heavy chain around him lest he should escape, a rat, chased by some boys, ran towards him, and nestled inside his shirt. There the frightened creature lay, in its place of refuge, close to that hard heart which cared for no fellow-man; and as the poor lonely convict felt its fluttering, a strange feeling came over him towards the trembling thing which had thus trusted him. He asked leave to keep it as a pet, and from that time the rat followed its protector everywhere, faithful and loving as a dog; and from caring for his little rescued friend, the man who had been so savage and hard, became more gentle, and no longer needed to be chained, and kept almost as if he had been a wild beast. There is a sad ending to this story, for at last the rat was killed by a bough falling upon it, and its death caused such grief to its master that he never spoke again; but I do not know his history to the very end, and I hope that even through seeing the gratitude and faithfulness of one of the creatures whom God had made, he may have learnt that the God against whom he had so hardened himself was ready to forgive and to receive him, for the sake of the Lord Jesus Christ, who came "to seek and to save that which was lost."