In addition to these, he engraved a set of thirteen plates (1671) on the various English ways of hunting, hawking, and fishing, after Francis Barlow, painter and engraver, who flourished during the same period, and excelled in the representation of animals, birds, and fish. The latter artist has left a curious print--of which the only known example is supposed to be that of the British Museum--entitled "The Last Horse Race" (August 24, 1684), run before Charles II., at Dorsett Ferry (? Datchett), near Windsor Castle. Hollar was the master of Robert Gaywood, who in some measure imitates his style, and many of whose plates are justly esteemed, such as the series of heads after Van Dyck, the curious likeness of Cromwell, the large print of the philosophers Democritus and Heraclitus, as opposing professors of gaiety and gravity, and the plates of birds and animals after Barlow.
In the meantime, the art of mezzotint had been invented, in the first place, by Ludwig von Siegen, a lieutenant-colonel in the service of the Landgrave of Hesse-Cassel, who used the method to execute a large portrait, bearing the date 1642, of the Princess Amelia Elizabeth, the dowager Landgravine of Hesse. The credit for the discovery has also been ascribed to the well-known Prince Rupert,[52] nephew of Charles I.; but the legend of the prince meeting with a soldier cleaning his corroded gun, and thus conceiving the idea of engraving a copper plate, rests on no sufficient foundation. It is, however, enough for this romantic prince's undying renown, that, having acquired the secret of producing the necessary ground by some means or other, most probably from Von Siegen, he not only introduced the process into England, but executed himself several remarkable engravings in the style, one of which, known as "The Great Executioner" (dated 1658), after Spagnoletto,[53] to distinguish it from a smaller plate containing the head only of the same figure, remains to this day as a powerful and wonderful example of the method. It is curious that, with the partial exception of Germany, and a few isolated instances in other countries, mezzotint should have been practically confined to England; the very name is not recognised elsewhere. Germany uses the word "Schabkunst," scraping art; the French, "La manière noire," the black manner; and Italy, "L'incisione a fumo," engraving in smoke or black,[54]
