* "As this snake, 'Bucephalus Capensis', in our opinion, is not provided with a poisonous fluid to instill into wounds which these fangs may inflict, they must consequently be intended for a purpose different to those which exist in poisonous reptiles. Their use seems to be to offer obstacles to the retrogression of animals, such as birds, etc., while they are only partially within the mouth; and from the circumstance of these fangs being directed backward, and not admitting of being raised so as to form an angle with the edge of the jaw, they are well fitted to act as powerful holders when once they penetrate the skin and soft parts of the prey which their possessors may be in the act of swallowing. Without such fangs escapes would be common; with such they are rare.
"The natives of South Africa regard the 'Bucephalus Capensis' as poisonous; but in their opinion we can not concur, as we have not been able to discover the existence of any glands manifestly organized for the secretion of poison. The fangs are inclosed in a soft, pulpy sheath, the inner surface of which is commonly coated with a thin glairy secretion. This secretion possibly may have something acrid and irritating in its qualities, which may, when it enters a wound, cause pain and even swelling, but nothing of greater importance.
"The 'Bucephalus Capensis' is generally found on trees, to which it resorts for the purpose of catching birds, upon which it delights to feed. The presence of a specimen in a tree is generally soon discovered by the birds of the neighborhood, who collect around it and fly to and fro, uttering the most piercing cries, until some one, more terror-struck than the rest, actually scans its lips, and, almost without resistance, becomes a meal for its enemy. During such a proceeding the snake is generally observed with its head raised about ten or twelve inches above the branch round which its body and tail are entwined, with its mouth open and its neck inflated, as if anxiously endeavoring to increase the terror which it would almost appear it was aware would sooner or later bring within its grasp some one of the feathered group.
"Whatever may be said in ridicule of fascination, it is nevertheless true that birds, and even quadrupeds, are, under certain circumstances, unable to retire from the presence of certain of their enemies; and, what is even more extraordinary, unable to resist the propensity to advance from a situation of actual safety into one of the most imminent danger. This I have often seen exemplified in the case of birds and snakes; and I have heard of instances equally curious, in which antelopes and other quadrupeds have been so bewildered by the sudden appearance of crocodiles, and by the grimaces and contortions they practiced, as to be unable to fly or even move from the spot toward which they were approaching to seize them."--Dr. Andrew Smith's "Reptilia".
In addition to these interesting statements of the most able naturalist from whom I have taken this note, it may be added that fire exercises a fascinating effect on some kinds of toads. They may be seen rushing into it in the evenings without ever starting back on feeling pain. Contact with the hot embers rather increases the energy with which they strive to gain the hottest parts, and they never cease their struggles for the centre even when their juices are coagulating and their limbs stiffening in the roasting heat. Various insects, also, are thus fascinated; but the scorpions may be seen coming away from the fire in fierce disgust, and they are so irritated as to inflict at that time their most painful stings.
Some of the Bayeiye we met at Sebituane's Ford pretended to be unaffected by the bite of serpents, and showed the feat of lacerating their arms with the teeth of such as are unfurnished with the poison-fangs. They also swallow the poison, by way of gaining notoriety; but Dr. Andrew Smith put the sincerity of such persons to the test by offering them the fangs of a really poisonous variety, and found they shrank from the experiment.