858. Why does the water leak out, but not run?
Because water has a tendency always to move to the lowest point, but as the air does not enter freely the water cannot escape. It therefore drops, as small portions of the air enter.
"Remember now thy creator in the days of thy youth."—Ecclesiastes xi.
859. Why cannot the handle be pressed in, if the finger is applied to the orifice?
Because water is not compressible, like air; it must therefore escape before the handle can be pressed in. Air may be forced into a much smaller compass than is natural to it; but it is impossible to compress water in any great degree.
Fig. 42.—"SUCKER."