To follow the poet’s train of thought
“How he crawls, cp the walls, yet he never
fails.”
The former theory that this is accom
plished by suction as a brick can be
raised from the ground by a piece of wet.
leather, is exploded. And we are now
told, on French authority, that it is due
to the presence of the many minute hairs
on the feet, from ten to twelve thousand
in all, each terminating in a bclb, which
by exuding an oily liquid adheres to sur
faces by capillary attraction. When the
fly tries to walk up a wet surface the
moisture prevents the oil from coming
in contact with the surface, and so there
is no attraction and consequently no sue
cess. Dost acts in an equally uafavora
ble way by clogging in the hairs, which
must, therefore, be kept perfectly clean.
■Rubbing the legs together partly cleanses
them, but not perfectly, so the tty curry
combs himself by passing the legs ove
wings, on which are roagu hairs. Bat the
head is supplied with a different kind,
so these are also utilized as brushes.
Anyone who lias used a tty toilet, and who
has not? must have wondered how so
large a head, working on so sma'l a pivot,
could be so roughly pulled about without
danger of decapitation. Go to the tty
thoa officeholder and learn how to keep
yoar head on.
