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But although these are thus distinguished, yet there are great differences between things even of the same class; and one is either more substantial, or weaker than another. For instance, there is more nourishment in bread, than in any thing else. Wheat is more firm than millet: and that again than barley: and the strongest kind of wheat is the siligo(37); after that the finest flour; next, that which has nothing taken from it, which the Greeks call autopyron[AX]: still weaker than these is the second flour: the weakest is grey bread. Amongst the leguminous vegetables the bean or lentil is more substantial than pease. Amongst the potherbs, turnep and navew gentle, and all the bulbous kind (in which I rank the onion also, and garlick) are more substantial than the parsnip, or that which is particularly called radicula (garden radish.) Also cabbage, and betes, and leeks, are stronger than lettuce, or gourd, or asparagus. But amongst the fruits of the surculous tribe, grapes, figs, nuts, dates, apples properly so called, are of the firmer kind. And amongst these the juicy are stronger than the mealy(38) fruits. Also of these birds, which are of the middle kind, those are stronger, which make more use of their feet, than their wings: and of those, that trust more to flying, the larger birds are stronger than the small ones, as the beccaficos, and thrush(39). And those also, which live in the water, afford a lighter food than those, which cannot swim. Amongst the tame animals pork is lightest; beef heaviest. Also of the wild, the larger any animal is, so much the stronger food it is. And of those fishes also, which are of the middle kind, the heaviest, though we make most use of them, are first all those, that are made salsamenta(40), such as the lacertus(41); next such, as though more tender than the other, yet are in themselves hard, as the aurata, corvus, sparus, oculata; in the next rank are the plani fish, after which lighter still are lupi and mulli: and then all rock fish.