each of a number of street urchins. He then had these boys walk round
and round the band, sucking the lemons and making puckered faces at the
musicians. That soon ended the music.

[Sidenote: Experiments of Pavlov]

A distinguished German scientist, named Pavlov, has recently
demonstrated in a series of experiments with dogs that the sight of the
plate that ordinarily bears their food, or the sight of the chair upon
which the plate ordinarily stands, or even the sight of the person who
commonly brings the plate, may cause the saliva to flow from their
salivary glands just as effectively as the food itself would do if
placed in their mouths.

[Sidenote: Taste and digestion]

There was a time, and that not long ago, when the contact of food with
the lining of the stomach was supposed to be the immediate cause of the
secretion of the digestive fluids. Yet recent observation of the
interior of the stomach through an incision in the body, has shown that
just as soon as the food is _tasted_ in the mouth, a purely mental
process, the stomach begins to well forth those fluids that are suitable
for digestion.

[Sidenote: Bodily Effects of Sensations]

The press recently contained an account of a motorcycle race in Newark,
New Jersey. The scene was a great bowl-shaped motor-drome. In the midst
of cheering thousands, when riding at the blinding speed of ninety-two
miles an hour, the motorcycle of one of the contestants went wrong. It