In my former note I modestly proposed an alternative suggestion to the one I now offer, of this aberrant and strange bit of hair-country, and this was that it was correlated with the broad short snout. As I have remarked before this word “correlated” is used so loosely as to mean almost anything the user likes, and it is, in my opinion, a fine source of confusion of thought. Undoubtedly this shape of the muzzle of the Parti-coloured Bear is linked somehow with the arrangement of its hair on that region. But it is hardly to be imagined that a direct reversal of hair from the proper bear-type, that is to say from the mouth to the head, would be produced by the mere broadening of the muzzle on account of some adaptation to its altering life. The link surely is of a different nature, and analogous to that of the corresponding surface in the lion and other cats, and that the cleaning of its fur on the snout is done in feline and not in ursine fashion, that is to say forwards, and that the breadth of muzzle is the reason for the change of method. Two-Toed Sloth--Cholæpus didactylus. This weird creature is one of a decaying family whom naturalists, with needless and frank brutality, called toothless. The term is neither exact nor polite. It is very much as if one were to call a person “toothless” whose front teeth had been knocked out, but whose remaining teeth were good and useful. But it represents so important a taxonomic character that one must allow for what seems bad manners on the part of zoological leaders who are, as a rule, full of the milk of human kindness, and seldom in these days quarrel even among themselves, adopting the motto _nihil animalium alienum a me puto_. [Illustration: Fig. 48.--Two-toed sloth, showing action of gravity upon the long thick hairs.] The sloths form an excellent example of the action of gravity upon long thick hairs, and the Fig. 48 given will explain this. They are New World animals, though indeed they have what we call an “Old World” look, and are truly ancient. They spend the larger part of their time upside down in the manner represented in the drawings. They are arboreal and nocturnal animals that come down to earth in search of food when things are quieter below, and will wander for considerable distances, walking slowly on the outer borders of their feet and the feet turned in.