The Arabs assert, that the camelion is the only animal which destroys the serpent,[96] and it is said to do it in the following manner: it proceeds cautiously on the bough of some tree, under which the serpent sleeps, and placing itself perpendicularly over its head, discharges a glutinous thread of saliva, having a white drop at the end, which falling on the serpent’s head, soon kills him. This assertion being general and uncontroverted, among the Arabs, I have mentioned it, as a hint to future travellers, who may be desirous of investigating its truth. The camelion is, by some persons, said to be venemous: but I never knew any harm done by them, though the boys sometimes carry them in their bosoms. _The Dub, or Saharawan Lizard._—This animal always avoids water; it is about eighteen inches long, and three or four inches broad across the back; it is not poisonous, being an inhabitant of Sahara, which, like Ireland, is said to contain no venomous animals:[97] it lays eggs like the tortoise; it is very swift, and if hunted, will hide itself in the earth, which it perforates with its nose, and nothing can extricate it, but digging up the ground. The similarity between the name of this reptile, and the Arabic name of the bear (Dubb), has probably led some persons to assert, that there are bears in Africa. _Locusts (Jeraad)._—This destructive creature, which the French call sauterelle, confounding it with the common grasshopper, differs very much from that insect, in the direful effects and devastation it causes in the countries it visits. Dr. Johnson, in his translation of Lobo’s Abyssinia, has rendered it _grasshopper_, although it evidently should have been translated _locust_. [Illustration:_Plate 3._ _(Jeraada) a Locust, natural size._ _Drawn by J. G. Jackson._ _Engraved J. C. Stadler._ _London Published June 4. 1811. by G. & W. Nicholl Pall Mall._]