A remedy for cold shiverings, according to Nicander, is a dead amphisbæna,[1] or its skin only, attached to the body: in addition to which, he informs us that if one of these reptiles is attached to a tree that is being felled, the persons hewing it will never feel cold, and will fell it all the more easily. For so it is, that this is the only one among all the serpents that faces the cold, making its appearance the first of all, and even before the cuckoo's note is heard. There is another marvellous fact also mentioned, with reference to the cuckoo: if, upon the spot where a person hears this bird for the first time, he traces round the space occupied by his right foot and then digs up the earth, it will effectually prevent fleas from breeding, wherever it is thrown.