The use of the Mobility is, to produce food, habitation, and clothing, for the superior classes, and to perform for them those various offices, which, though essential to existence, are not of a dignified quality. Like some of the canine tribes, they are also employed for purposes of defence; for which, with some little drilling and correction, they may be rendered eminently serviceable. During war-time, they are caught and trained for the water; but on the expediency of this proceeding there is some difference of opinion. The manners of the Mobility are neither sweet nor refined; there is none of the lump-sugar of humanity in them. It is true that one laundress will address another as "Ma'am," and that the driver of a public cabriolet will speak of a locomotive vegetable vender as "that other gentleman;" still people of this description, when they salute one another at all, do so in a very inelegant manner. It is a great pity that they do not take a lesson in this respect from the French, as they would then relinquish their strange practices of nodding and winking, and poking each other in the side. But on points like these we must be brief; a glimpse only of the horrible is always sufficient. Will our readers believe it? the Mobility, in conversation, accuse each other without scruple, in terms not to be mistaken, of wilfully erroneous assertions! and, not content with this, often accompany the insult by a backward movement of the left thumb over the shoulder! But what can be expected of those who smoke pipes of tobacco in the open streets? The taste of the Mobility is not delicate. As regards aliment, it is one which Louis Eustache Ude never, we are sure, thought of consulting. Their diet is said to include such articles as _tripe, cow-heel, (?) &c._ if any one knows what those things are. Their literary appetite, that, at least, of those who can read, tends chiefly to certain publications which come out weekly, are mostly sold for the small charge of one penny, and are filled with vituperation of the higher orders. The Mobility are also very fond of "Last Dying Speeches and Confessions;" indeed they regard all information, connected with the administration of the criminal law, with a peculiar interest.