Pliny thus describes "The Serpents called Basilisks. There is the same power[40] also in the serpent called the Basilisk. It is produced in the province of Cyrene, being not more than twelve fingers in length. It has a white spot on the head, strongly resembling a sort of diadem. When it hisses, all the other serpents fly from it: and it does not advance its body, like the others, by a succession of folds, but moves along upright and erect upon the middle. It destroys all shrubs, not only by its contact, but even those that it has breathed upon; it burns up all the grass too, and breaks the stones, so tremendous is its noxious influence. It was formerly a general belief that if a man on horseback killed one of these animals with a spear, the poison would run up the weapon and kill, not only the rider, but the horse as well. To this dreadful monster the effluvium of the weasel is fatal, a thing which has been tried with success, for kings have often desired to see its body when killed; so true is it that it has pleased Nature that there should be nothing without its antidote. The animal is thrown into the hole of the basilisk, which is easily known from the soil around it being infected. The weasel destroys the basilisk by its odour, but dies itself in this struggle of nature against its own self."
"What shield of Ajax could avoid their death By th' Basilisk whose pestilentiall breath Doth pearce firm Marble, and whose banefull eye Wounds with a glance, so that the wounded dye."
The origin of the Cockatrice is, to say the least, peculiar:--"There is some question amongest Writers, about the generation of this Serpent: for some, (and those very many and learned,) affirme him to be brought forth of a Cockes egge. For they say that when a Cocke groweth old, he layeth a certaine egge without any shell, instead whereof it is covered with a very thicke skinne, which is able to withstand the greatest force of an easie blow or fall. They say, moreover, that this Egge is layd onely in the Summer time, about the beginning of the Dogge-dayes, being not so long as a Hens Egge, but round and orbiculer: Sometimes of a Foxie, sometimes of a yellowish muddy colour, which Egge is generated of the putrified seed of the Cocke, and afterward sat upon by a Snake or a Toad, bringeth forth the Cockatrice, being halfe a foot in length, the hinder part like a Snake, the former part like a Cocke, because of a treble combe on his forehead.