But everybody knows that the fir, cypress, and the like are no great bearers.

For as men very fat have few children (for, the whole nourishment being employed in the body, there remains no overplus to make seed), so these trees, spending all their sap in their own stock, flourish indeed and grow great; but as for fruit, some bear none at all, some very little, and that too slowly ripens; therefore it is no wonder that they will not nourish another's fruit, when they are so very sparing to their own.
QUESTION VII.

ABOUT THE FISH CALLED REMORA OR ECHENEIS.
CHAEREMONIANUS, PLUTARCH, AND OTHERS.
Chaeremonianus the Trallian, when we were at a very noble fish dinner, pointing to a little, long, sharp-headed fish, said the echeneis (ship-stopper) was like that, for he had often seen it as he sailed in the Sicilian sea, and wondered at its strange force; for it stopped the ship when under full sail, till one of the seamen perceived it sticking to the outside of the ship, and took it off.

Some laughed at Chaeremonianus for believing such an incredible and unlikely story.
Others on this occasion talked very much of antipathies, and produced a thousand instances of such strange effects; for example, the sight of a ram quiets an enraged elephant; a viper lies stock-still, if touched with a beechen leaf; a wild bull grows tame, if bound with the twigs of a fig-tree; and amber draws all light things to it, except basil and such as are dipped in oil; and a loadstone will not draw a piece of iron that is rubbed with onion.

Now all these, as to matter of fact, are very evident; but it is hard, if not altogether impossible, to find the cause.
Then said I: This is a mere shift and avoiding of the question, rather than a declaration of the cause; but if we please to consider, we shall find a great many accidents that are only consequents of the effect to be unjustly esteemed the causes of it; as for instance, if we should fancy that by the blossoming of the chaste-tree the fruit of the vine is ripened; because this is a common saying,-- The chaste-tree blossoms, and the grapes grow ripe; Or that the little protuberances in the candle-snuff thicken the air and make it cloudy; or the hookedness of the nails is the cause and not an accident consequential to an ulcer.