betake themselves to the business of rearing a second, which they bring
out towards the end of August. This little bird is an instructive
pattern of unwearied industry and affection; for, from morning till
night, whilst their young ones require support, they spend the whole day
in their service. Their food consists of flies, gnats, and a small
species of beetle, and they drink as they fly along, sipping the surface
of the water. They settle, occasionally, on the ground, to pick up
gravel, which is necessary to grind and digest the food of all birds.
[Footnote: for the preceding and following account, see White's Natural
History of Selberne.]

_Ferdinand_. Pray mamma, how can we distinguish a swallow from the other
species of _hirundines_? I think that is the name by which you call
them.

"By the length and forkedness of their tails," returned Mrs. Bernard:
"they are much more nimble, too, than the other species."

_Louisa_. Do they always build in chimneys, pray, mamma?

_Mrs. B._ Although the shaft of a chimney is the place of which they
usually make choice for this purpose, they sometimes vary their plan.
In Sir Ashton Lever's Museum, was the nest of a swallow built on the
wings and body of an owl, which happened, by accident, to hang dead and
dry from the rafter of a barn; and another in a large shell, which was,
the following year, suspended in the same place. You have, no doubt, my
dear children, all observed vast flocks of swallows assemble together on
the roofs of houses; they chirp, and chatter, and seem very busy,
preparing for their ensuing migration, and consulting, as it were, upon
the plan most proper to be adopted on this occasion. I have often