est to keep these aquatic insects by themselves, as they are all
voracious feeders, and fierce in their habits. They are not so beautiful
in form, color, and motions as fish, but possess a much greater interest
as they pass through their many transformations. As most of them can
fly, the aquarium should be provided with a close-fitting frame covered
with mosquito netting.

[Illustration: CRIMSON-SPOTTED NEWT.]

The crimson-spotted newt is one of the most inoffensive of all animals
for the aquarium, and is valuable from the fact that he does not breathe
water, but rises to the surface to breathe. Every few weeks he casts his
skin, which he swallows, seeming to relish it, after which he comes
forth more brilliant than ever.

[Illustration: TADPOLE.]

An aquarium without tadpoles, from which to obtain a supply of small
frogs, is not much of an aquarium; and as they are also surface
breathers, you can use them freely.

The rock-fish is a very safe fish for the aquarium, as it does not
breathe the water, but rises to the surface, and stores away a supply of
air, with which it descends to the bottom, remaining for half an hour
before it rises for a new supply.

All fresh-water fish (excepting the trout family) can be kept in a
fresh-water aquarium. Select the very smallest specimens; have all of an
equal size, to prevent their quarrelling; feed on shreds of raw beef, or
earth-worms that have been freed of all earthy matter by placing them in
damp moss or grass overnight. _Look out for food not eaten._

[Begun in No. 31 of HARPER'S YOUNG PEOPLE, June 1.]

THE MORAL PIRATES.

BY W. L. ALDEN.

CHAPTER XIII.

The cruise up the Schroon was a delightful one while it lasted. The
river was so narrow that the trees on either side frequently met,
forming a green and shady arch. Although there was a road not far from
the river, and there were houses and small villages at a little distance
from its banks, the boys while in their boat saw nothing but the water,
the trees, and the sky, and felt as far removed from civilization as if
they were sailing on an African river. They saw nothing to shoot, after
their adventure with Joe's bear, and there were no signs of fish in the
water; but they delighted in the wild and solitary river, and were very
much disappointed when, at the close of the day, they reached a dam so
high that it seemed hopeless to try to carry the boat around it.

Before camping they walked some distan