IN NATURE, vol. xiii. p. 107, Mr. Wood, of Manila, writes on “Saw-fish inhabiting fresh water,” in the Laguna de Baij, Luzon, as on something curious and new. But this fact was known long ago; not only do sharks live in fresh water there, but also elsewhere on the globe. As one who mentions the sawfish in the Laguna de Baij, I only name the famous de la Gironniere (“Aventures d'un Gentilhomme Breton,” 1857). He says, p. 102: “Deux poissons de mer se sont acclimates dans les eaux douces du lac: le reguin et la scie. Le premier est heureusement assez rare, mais le second est tres abondant.”