sity. For the legend of Domine quo vadis,
see many books of travel and nearly all guide books for Rome, from
the mediaeval Mirabilia Romae to the latest edition of Murray. The
footprints of Mohammed at Cairo were shown to the present writer in
1889. On the general subject, with many striking examples, see Falsan,
La Periode glaciaire, Paris, 1889, pp. 17, 294, 295.

Another and very fruitful source of explanatory myths is found in
ancient centres of volcanic action, and especially in old craters of
volcanoes and fissures filled with water.

In China we have, among other examples, Lake Man, which was once the
site of the flourishing city Chiang Shui--overwhelmed and sunk on
account of the heedlessness of its inhabitants regarding a divine
warning.

In Phrygia, the lake and morass near Tyana were ascribed to the wrath
of Zeus and Hermes, who, having visited the cities which formerly stood
there, and having been refused shelter by all the inhabitants save
Philemon and Baucis, rewarded their benefactors, but sunk the wicked
cities beneath the lake and morass.

Stories of similar import grew up to explain the crater near Sipylos
in Asia Minor and that of Avernus in Italy: the latter came to be
considered the mouth of the infernal regions, as every schoolboy knows
when he has read his Virgil.

In the later Christian mythologies we have such typical legends as those
which grew up about the old crater in Ceylon; the salt water in it being
accounted for by supposing it the tears of Adam and Eve, who retreated
to this point after their expulsion from paradise and bewailed their sin
during a hundred years.

So, too, in Germany we have multitudes of lakes supposed to owe their
origin to the sinking of valleys as a punishment for human sin. Of these
are the "Devil's Lake," near Gustrow, which rose and covered a
church and its priests on account of their corruption; the lake at
Probst-Jesar, which rose and covered an oak grove and a number of
peasants resting in it on account of their want of charity to beggars;
and the Lucin Lake, which rose and covered a number of soldiers on
account of their cruelty to a poor peasant.

Such legends are found throughout America and in Japan, and will
doubtless be found throughout Asia and Africa, and especially among
the volcanic lakes of South America, the pitch lakes of the Caribbean
Islands, and even about the Salt Lake of Utah; for explanatory myths and
legends under such circumstanc