千年血战第四季在线If the Boas furnish the most terrible examples of the tremendous powers of destruction possessed by a few of that division of the Serpent tribe, whose bite is unattended with the effusion of venom, the Rattlesnakes afford a no less remarkable instance of the dreadful malignity of the poison with which others of the tribe are so abundantly supplied. This poison is secreted by a gland of considerable size situated beneath the eye, the excretory duct of which terminates on each side at the base of a long and tubular fang in the upper jaw, which is concealed while the animal is at rest in a fold of the gum, but is capable of being instantaneously[240] erected when he is irritated, and affords at the same time the means of inflicting the wound and of insinuating into it the deadly fluid with which it is charged. In the Rattlesnakes these two fangs are the only visible teeth implanted in the upper jaw; but behind each of them are several rudiments of others by which they are from time to time replaced. Their other

d by the readiness with which these wild Dogs submit to the control of man, and become familiarized with that state of servitude to which nature appears to have destined them from the first. Other animals may indeed be tamed; they may become playful, familiar, and even affectionate; but none of them have hitherto been taught, even by long-continued training, to exhibit[87] qualities of mind in any degree comparable to the absolute subserviency, the undeviating attachment, the submissive docility, and the acute intelligence, which these invaluable animals almost spontaneously manifest, when placed in circumstances favourable to their developement.

千年血战第四季在线 

The colour of the species varies in different lights: in general it may be described as grayish black, with a tinge of yellow. On this ground it is marked with one broad dorsal, and on each side two or three narrower, indistinct black lines. The under jaw, the legs, and the greater part of the tail are entirely black; and there is a whitish spot above and under each of its eyes.
To what cause then, if the similarity between these two animals be so great, and the points of distinction between them so trifling, can we attribute the very different impressions which we have all received, and in all probability continue to cherish, with regard to their respective characters? Perhaps something like a plausible answer to this question may be found in the fact, that our notions of the Lion have been formed on the striking and exaggerated pictures of his noble qualities, for which we are indebted to the poets of antiquity, who contemplated him only in his captive and almost domesticated state; while our early ideas of the Tiger were derived in a great measure from the equally exaggerated statements of miserable and pusillanimous Hindoos, the spiritless and unresisting victims of every species of oppression, who regarded him with almost unspeakable horror as the merciless tyrant of their forests,—a tyrant whose ferocious temper and sanguinary ravages were equalled only by those of the human de