sh much smaller than itself that have the
spirit to attack it. A gentleman who possessed an aquarium in which were
several large gold-fish, once placed a tiny "pumpkin-seed," or sunfish,
about the size of a silver half dollar, in the water. Watching anxiously
to see that the gold-fish did not injure it, what was his astonishment
to see the "pumpkin-seed" dart furiously at the larger fish, which
huddled themselves in a corner, or scurried hastily through the water to
hide among the stones and mimic grottoes of the aquarium! From that
moment the "pumpkin-seed" remained lord of the field, scarcely allowing
his companions to come to the surface, as they are fond of doing, or to
take a mouthful of food until he had satisfied his own hunger. Finally
he had to be removed from the aquarium, to save the gold-fish from dying
of fright.

The enormous demand for gold-fish is shown by the fact that from the
establishment at Oldenburg alone over three hundred thousand fish are
sent to market every year. Their price varies according to their size
and beauty, for there are grades of beauty in gold-fish as well as in
all other things. They are very pretty household ornaments, and by
caring for them and carefully watching their habits, boys and girls may
learn their first lesson in natural history. If kept in a glass globe,
nothing can be more interesting than to watch them, for, as Mr. White
says, in _Selborne_, "The double refraction of the glass and water
represents them, when moving, in a shifting and changeable variety of
dimensions, shades, and colors, while the two mediums, assisted by the
concavo-convex shape of the vessel, magnify and distort them vastly."
Still, the fish may be healthier if kept in an aquarium, as it allows
more surface to the water, and consequently more air and ventilation. In
any case, fresh water should be given the fish at least every other day,
and if the globe or aquarium be ornamented with rocks and water-grasses,
the fish should be carefully dipped out once a week, and the rocks
thoroughly cleansed from all impurities.

Although the fish draw nourishment from animalcules supplied by the
water, and will live a long time without other food, it is advisable to
feed them by throwing bread-crumbs, or flies and other small insects, on
the surface of the water. The eagerness with which they dart for them
proves them to be welcome. Care should be taken not to scatter more
bread-crumbs than will be immediately