Galen gives an interesting account of bread. The best kinds, he says, are such as contain plenty of leaven, have been properly pounded, and exposed to a moderate heat in the oven. When exposed to too strong a heat, he properly remarks that a crust is burned on the outside, while the inside is left raw or improperly concocted. Unleavened bread he wholly condemns. Celsus appears to have had a better opinion of it, for he ranks it first among those substances which do not spoil on the stomach. Of bread, in general, he correctly remarks, “Siquidem plus alimenti est in pane quam in ullo alio.” Pliny and Galen describe a soft spongy kind of bread, which would seem to have resembled that which we call buns. Pliny adds, that some nations prepare their bread with butter. He mentions a kind of bread called _artolagani_, which, according to Dr. Arbuthnot, answered to our cakes. Seth gives an interesting account of bread, but it is mostly extracted from Galen. Haly Abbas says, that the best kind of bread is that which is made from wheaten flour and salt, and is fermented, and heated in an oven to such a degree as not to burn the outer crust. Rhases disapproves entirely of unleavened bread. Serapion states that old bread is astringent. Avenzoar prefers newly-made bread, provided it has been cooled. Hippocrates condemns the eating of bread before it has been properly cooled. (De Diæt. i.) He mentions only two kinds of bread, the fine and the coarse—_autopyrus_. (De Vet. Med. 14.) According to Actuarius, the lightest kinds of wheat form the best bread for indolent persons, but persons actively employed require the weightiest kinds. Unleavened bread, he says, is very indigestible. Bread prepared with oil, he adds, is very nutritious, but requires a strong stomach to digest it. See an interesting account of the various kinds of bread in Athenæus (Deipnos. ii, 26.) He makes the remark that the worst kind is the most laxative. Among the kinds of bread described by ancient authors may be noticed the _oxylipus_ mentioned by Galen (Meth. Med. viii, 5), which, as Manardus remarks, was prepared with vinegar. Another kind, called νάστος, was fermented with honey, dried grapes, &c. See Tzetzes (ad Lycoph. Casan. 640.) It is to be borne in mind that the ancients generally used _leaven_ to ferment their bread. Pliny, however, mentions that the Gauls and Spaniards were in the practice of using _yeast_. (H. N. xviii, 7.)