power of second sight, was religiously believed in. There are few important houses in England whose ancestral walls have not concealed an apparition connected with the destinies of the family, appearing only on fatal or eventful occasions; and in the days of the sapient James I. in England, and among the Pilgrim Fathers in the American States, the existence of wizards and witches was universally accepted as an undeniable fact, proved by hundreds of instances of extorted or voluntary confession, and supplemented by the concurrent testimony of a still greater number of witnesses who genuinely believed themselves to have been the spectators or victims of the supernatural powers of the accused. [Illustration: FIG. 49.--MANTIS (A VERY CHARACTERISTIC FIGURE). (_From the 'Rh Ya._)] An historian of these later times might well have described such things as realities, and we should not be disposed, on account of his having done so, to question the validity of his description of other objects or creatures existing at the period, presuming them to be more consistent with our present notions of possibility. No one, now-a-days, would discredit the veracity of Marco Polo because he speaks of enormous serpents in Carajan, possessing two feet, each armed with a single claw. That there was a solid foundation for his story is admitted, and commentators are only at variance as to whether the basis was a large species of python, such as still exists in Southern China, or a gigantic alligator, of which he might have seen a mutilated specimen. It must also be borne in mind that the existence of some gigantic saurian, now extinct, possessing two limbs only, in place of four, is not an impossibility; as the small lizard, Chirotes, is in that condition, and also the North American genus _Siren_, belonging to the Newts. [Illustration: FIG. 50.--TOOLS OF HUSBANDRY. (_From the 'Rh Ya._)] I notice that Retzoch, in his designs to illustrate Schiller's poem, "The Fight with the Dragon," makes the monster have only two fore-legs, and this appears to have been a common mediæval conception of it. Aldrovandus and Gesner both give figures of biped dragons. There is also a curious drawing in the _Gentleman's Magazine_ for 1749--which is transferred into the pages of the _Encyclopædia of Philadelphia_, apparently a piracy of an English Cyclopædia, of what is styled a sea-dragon, four feet long, which stands bolt upright on two legs, and, like Barnum's mermaid, was probably a triumph of art. [Illustration: FIG. 51.--DRACO BIPES APTEROS CAPTUS IN AGRO BONONIENSI. (_Aldrovandus._)] Aldrovandus was probably imposed on by some waggish friend, in reference to the biped dragon without wings, two cubits long, which was said to have been killed by a countryman near Bonn in 1572 A.D., and which he first figured and then placed in his museum; and he evidently fully believed in the Ethiopian winged biped dragon, of which he gives two figures, but without quoting his authority.