It is not improbable that they dream; and, at such times, the recollection of objects and scenes may be presented to them in visible phantasmata; and in the delirium of canine madness, they are observed to snap at imaginary existences; but this is far below the process that constitutes reflection, which consists in the capacity of reviewing the whole of our perceptions; and it has been endeavoured to point out that this can only be effected through the medium of intelligent sound, or its visible representative. If we were to contend for their capacity of reflection, we must, at the same time, acknowledge, that they do not appear to derive any improvement from the process; and to suppose them endowed with that which was nugatory, and contributed in no degree to their advancement, would be an idle and useless hypothesis. When not employed and directed by man, their lives are principally occupied in procuring food, and in the propagation of their species; and when their appetites are satisfied, they repose or sleep: when not guided by instinct, they seem to act from established habits, or the dictates of immediate impression. They are capable of considerable acquirements under the coercive tuition of man, and may be taught a variety of tricks for his amusement or profit; but they do not appear to comprehend their utility, or to hold these instructions in any estimation, as they never practise them when alone. The most accomplished bear would not dance for his own entertainment; and the learned pig never attempted to become a school-master to the hogs of his acquaintance.