All other animals may,

with very few exceptions, be comprehended
within four genera: to wit, molluscs, crustaceans, testaceans, and
insects. Of these four genera, the mollusc, the crustacean, and the
insect have all the senses: at all events, they have sight, smell, and
taste. As for insects, both winged and wingless, they can detect the
presence of scented objects afar off, as for instance bees and
snipes detect the presence of honey at a distance; and do so
recognizing it by smell. Many insects are killed by the smell of
brimstone; ants, if the apertures to their dwellings be smeared with
powdered origanum and brimstone, quit their nests; and most insects
may be banished with burnt hart's horn, or better still by the burning
of the gum styrax.