(_For the Mirror._)
The following fact is copied from a French work entitled _Archives sur
Anatomie_:--"A small spider had spread its net between two neighbouring
trees, at the height of about nine feet. The three principal points, to
which the supporting threads were attached, formed here as they usually
do, an equilateral triangle. One thread was attached above to each of
the trees, and the web hung from the middle of it. To procure a third
point of attachment, the spider had suspended a small stone to one end
of a thread; and the stone being heavier than the spider itself, served
in place of the lower fixed point, and held the web extended. The little
pebble was five feet from the earth." The whole was observed, and is
described by Professor Weber, of Leipsig.