There is something still unexplained in the dread which an elephant always exhibits on approaching a fence, and the reluctance which he displays to face the slightest artificial obstruction to his passage. In the area of the fine old tank of Tissa-weva, close by Anarajapoora, the natives cultivate grain, during the dry season, around the margin where the ground has been left bare by the subsidence of the water. These little patches of rice they enclose with small sticks an inch in diameter and five or six feet in height, such as would scarcely serve to keep out a wild hog if he attempted to force his way through. Passages of from ten to twenty feet wide are left between each field, to permit the wild elephants, which abound in the vicinity, to make their nocturnal visits to the water still remaining in the centre of the tank. Night after night these open pathways are frequented by herds, but the tempting corn is never touched, nor is a single fence disturbed, although the merest movement of a trunk would be sufficient to demolish the fragile obstruction. Yet the same spots, the fences being left open as soon as the grain has been cut and carried home, are eagerly entered by the elephants to glean amongst the stubble. Sportsmen observe that an elephant, even when enraged by a wound, will hesitate to charge an assailant across an intervening hedge, but will hurry along it to seek for an opening. It is possible that, on the part of the elephant, there may be some instinctive consciousness, that owing to his superior bulk, he is exposed to danger from sources that might be perfectly harmless in the case of lighter animals, and hence his suspicion that every fence may conceal a snare or pitfall. Some similar apprehension is apparent in the deer, which shrinks from attempting a fence of wire, although it will clear without hesitation a solid wall of greater height. At the same time, the caution with which the elephant is supposed to approach insecure ground and places of doubtful[91] solidity, appears to me, so far as my own observation and experience extend, to be exaggerated, and the number of temporary bridges which are annually broken down by elephants in all parts of Ceylon, is sufficient to show that, although in captivity, and when familiar with such structures, the tame ones may, and doubtless do, exhibit all the wariness attributed to them; yet, in a state of liberty, and whilst unaccustomed to such artificial appliances, their instincts are not sufficient to ensure their safety. Besides, the fact is adverted to elsewhere,[92] that the chiefs of the Wanny, during the sovereignty of the Dutch, were accustomed to take in pitfalls the elephants which they rendered as tribute to Government.