《短歌行》全文书籍摘要:period of time; for, according to the statement of Mr. Corse, Elephants have been known to stand twelve months at their pickets without lying down to sleep; and this is regarded as a certain sign of want of confidence in their keepers and of[174] a longing desire to regain their liberty. It is probably to some such circumstance as this that we are indebted for the erroneous idea so generally prevalent that these animals always sleep standing; whereas the truth is, that when perfectly at ease and reconciled to their fate, they lie down on their sides and sleep like other beasts.All that we know of their habits in a state of nature may be comprehended in the single fact, that, in addition to the vegetable substances, and more particularly fruits, which form the principal part of their subsistence, they feed on the eggs of birds, and even on the birds themselves, their agility and the structure of their claws affording them the means of reaching the tops of the tallest trees with quickness and facility. In captivity they are easily tamed, and even appear susceptible of some degree of attachment; but they never entirely lose their sentiment of independence, and are consequently incapable of complete domestication. When placed[114] under a certain degree of restraint they appear contented and happy, are fond of play, and take pleasure in the caresses of their friends, and even of strangers; but however long this kind of domestication may have continued, and how much soever they may seem reconciled to their confinement, the moment the restraint is withdrawn and they feel themselves again……