[131] The fact of the elephant exhibiting timidity, on having a long rod pointed towards him, was known to the Romans; and PLINY, quoting from the annals of PISO, relates, that in order to inculcate contempt for want of courage in the elephant, they were introduced into the circus during the triumph of METELLUS, after the conquest of the Carthaginians in Sicily, and _driven round the area by workmen holding blunted spears_,—“Ab operariis hastas præpilatas habentibus, per circum totum actos.” (_Nat. Hist._ lib. viii. c. 6.) [132] “In a corral, to be on a tame elephant, seems to insure perfect immunity from the attacks of the wild ones. I once saw the old chief Mollegodde ride in amongst a herd of wild elephants, on a small elephant; so small that the Adigar’s head was on a level with the back of the wild animals: I felt very nervous, but he rode right in among them, and received not the slightest molestation.”—_Letter from Major_ SKINNER. [133] The surprising faculty of vultures for discovering carrion, has been a subject of much speculation, as to whether it be dependent on their power of sight or of scent. It is not, however, more mysterious than the unerring certainty and rapidity with which some of the minor animals, and more especially insects, in warm climates congregate around the offal on which they feed. Circumstanced as they are, they must be guided towards their object mainly if not exclusively by the sense of smell; but that which excites astonishment is the small degree of odour which seems to suffice for the purpose; the subtlety and rapidity with which it traverses and impregnates the air; and the keen and quick perception with which it is taken up by the organs of those creatures. The instance of the scavenger beetles has been already alluded to; the promptitude with which they discern the existence of matter suited to their purposes, and the speed with which they hurry to it from all directions; often from distances as extraordinary, proportionably, as those traversed by the eye of the vulture. In the instance of the dying elephant referred to above, life was barely extinct when the flies, of which not one was visible but a moment before, arrived in clouds and blackened the body by their multitude; scarcely an instant was allowed to elapse for the commencement of decomposition; no odour of putrefaction could be discerned by us who stood close by; yet some peculiar smell of mortality, simultaneously with parting breath, must have summoned them to the feast. Ants exhibit an instinct equally surprising. I have sometimes covered up a particle of refined sugar with paper on the centre of a polished table; and counted the number of minutes which would elapse before it was fastened on by the small black ants of Ceylon, and a line formed to lower it safely to the floor. Here was a substance which, to our apprehension at least, is altogether inodorous, and yet the quick sense of smell must have been the only conductor of the ants.