Note 505 — Chapter II
Reading edition
We know that lynx's eyes, or lynx-like eyes, mean very sharp-sighted ones; ancient physicians recommended against the stone or the disease of the gravel, now the lyncurium, the stone which was supposed to be made of the urine of the lynxes, given by India to Bacchus, according to Ovid's expression, and now crab's eyes. The moon destroys with its light the stone-sky, the sky of night; hence crab's eyes are recommended against the disease of the stone. When the moon is not in the sky of night, the stone is there.