"But if the chamæleon at any time see a serpent taking the air, and sunning himself under some green tree, he climbeth up into that tree, and setteth himself directly over the serpent; then out of his mouth he casteth a thread, like a spider, at the end of which hangeth a drop of poyson as bright as any pearl; by this string he letteth down the poyson upon the serpent, which, lighting upon it, killeth it immediately.
"And Scaliger reporteth a greater wonder than this in the description of the chamæleon; for he saith, if the boughs of the tree so grow as the perpendicular line cannot fall directly upon the serpent, then he so correcteth and guideth it with his fore-feet that it falleth upon the serpent within the mark of a hair's breadth.
"The raven and the crow are also at variance with the chamæleon, and so great is the adverse nature betwixt these twain, that if the crow eat of the chamæleon being slain by him, he dyeth for it except he recover his life by a bay-leaf, even as the elephant, after he hath devoured a chamæleon, saveth his life by eating of the wilde olive-tree.
"But the greatest wonder of all is the hostility which Pliny reporteth to be betwixt the chamæleon and the hawk. For he writeth that when a hawk flyeth over a chamæleon, she hath no power to resist the chamæleon, but falleth down before it, yeelding both her life and her limbs to be devoured by it, and thus that devourer that liveth upon the prey and blood of others hath no power to save her own life from this little beast."
It may here be remarked that the frog was said to save itself from the water-ducks by seizing a stick crosswise in its mouth, so that when the duck came to seize its prey, the stick came across the angles of the jaws, and prevented the frog from being swallowed.
So much for the Chameleon. We will now take the Nilotic Monitor (Hydrosaurus niloticus) and the Land Monitor (Psammosaurus scincus), the other reptiles which have been conjectured to be the real representatives of the Koach.
These lizards attain to some size, the former sometimes measuring six feet in length, and the latter but a foot or so less. Of the two, the Land Monitor, being the more common, both in Palestine and Egypt, has perhaps the best claim to be considered as the Koach of Scripture. It is sometimes called the Land Crocodile. It is a carnivorous animal, feeding upon other reptiles and the smaller mammalia, and is very fond of the eggs of the crocodile, which it destroys in great numbers, and is in consequence much venerated by the inhabitants of the country about the Nile.
The theory that this reptile may be the Koach of Leviticus is strengthened by the fact that even at the present day it is cooked and eaten by the natives, whereas the chameleon is so small and bony that scarcely any one would take the trouble of cooking it.
The Nilotic Monitor shares the same habit of devouring crocodiles' eggs, and consequently shares the respect of those who are endangered by the crocodile. It even eats the young crocodiles after they are hatched, chasing them through the water, and capturing them by means of its superior swiftness. It may be distinguished from the Land Monitor by the elevated keel which runs along the whole of the spine from the neck to the very end of the long tail. The general colour of the Nilotic Monitor is olive-grey, mottled with black. On the back of the neck are a series of curved bands of a whitish yellow.