1848. J. Gould, `Birds of Australia,' vol. vii. pl. 6:
"<i>Cygnus Atratus</i>, Black Swan. The first notice on record respecting the existence of the Black Swan occurs in a letter written by Mr. Witsen to Dr. M. Lister about the year 1698, in which he says, `Here is returned a ship, which by our East India Company was sent to the south land called <i>Hollandea Nova</i>'; and adds that Black Swans, Parrots and many Sea-Cows were found there."
1856. J. S. Mill, `Logic' [4th edition], vol. i. bk. iii. c. iii. p. 344:
"Mankind were wrong, it seems, in concluding that all swans were white. . . . As there were black swans, though civilized people had existed for three thousand years on the earth without meeting with them."
1875. `Spectator' (Melbourne), May 29, p. 45, col. 3:
"The presence of immense flocks of black swans is also regarded as an indication of approaching cold weather."
1882. T. H. Potts, `Out in the Open,' p. 22:
"The musical whoop of the black swan is sometimes heard as the wedge-shaped flock passes over."
1895. G. Metcalfe, `Australian Zoology,' p. 64:
"Strzelecki states that the black swan was discovered in 1697 by Vlaming. . . . In 1726 two were brought alive to Batavia, having been procured on the West Coast of Australia, near Dirk Hartog's Bay. Captain Cook observed it on several parts of the coast."