48. And where did he ever see ivy growing out of a stag's head? And again, owls and night-jars, he says, cannot see by day; on which account they hunt for their food by night, and they do this not during the whole night, but at the beginning of evening. And he says, too, that there are several different kinds of eyes, for some are blue, and some are black, and some are hazel. He says, too, that the eyes of men are of different characters, and that the differences of disposition may be judged of from the eyes; for that those men who have goats' eyes, are exceedingly sharp-sighted, and have the best dispositions. And of others, he says that some men have projecting eyes, and some have eyes deeply set, and some keep a mean between the two: and those whose eyes are deeply set, he says, have the sharpest sight, and those whose eyes project, must have the worst dispositions; and those who are moderate in these respects, are people, says he, of moderate dispositions. There are also some people whose eyes are always winking, and some who never wink at all, and some who do so in a moderate degree: and those who are always winking are shameless[19] people, and those who never wink at all are unstable and fickle, and those who wink in a moderate degree have the best disposition. [Sidenote: ARISTOTLE'S NATURAL HISTORY.] He says also that man is the only animal which has its heart on the left side; and that all other animals have it in the middle of the body. And he says that males have more teeth than females; and he affirms that this has been noticed in the case of the sheep, and of the pig, and of the goat. And he says also that there is no fish which has testicles, and there is no fish which has a breast, and no bird either; but that the only fish which has no gall is the dolphin. There are, however, some, says he, which have no gall in their liver, but they have it near their bowels; as the sturgeon, the synagris, the lamprey, the sword-fish, and the sea-swallow. But the amia has its gall spread over the whole of its entrails: and the hawk and the kite have theirs spread both over their liver and their entrails; but the ægocephalus has his gall both in his liver and in his stomach: and the pigeon, and the quail, and the swallow have theirs, some in their entrails, and some in their stomach.