e would seem a
strange instinct, accordant with her extreme susceptibility to
contamination.

The milk is all passed through several strainers, and then placed in
great tin cans, barred across the top, and sealed. They are deposited in
a van, which starts from the Farm about three in the morning, and
arrives at the dairy, in Farringdon-street, between three and four. The
seals are then carefully examined, and taken off by a clerk. In come the
carriers, commonly called "milkmen," all wearing the badge of Friern
Farm Dairy; their tin pails are filled, fastened at top, and sealed as
before, and away they go on their early rounds, to be in time for the
early-breakfast people. The late-breakfasts are provided by a second set
of men.

Such are the facts we have ascertained with regard to one of the largest
of the great dairy farms near London.

SAILING IN THE AIR.--HISTORY OF AERONAUTICS.

Aeronautics, or the art of sailing in the air, is of very modern date;
if, indeed, we are warranted to say that the art has yet been acquired,
for we have only got a machine or apparatus capable of sustaining some
hundreds of pounds in the air, the means of guiding and propelling it
having yet to be discovered. The attention and admiration of men would
doubtless be attracted from the beginning to the ease, grace, and
velocity with which the feathered race soar aloft, and wing their way in
the upper regions; but there is no reason to believe that any of the
nations of antiquity--not even Greece and Rome, with all their progress
in science and art--ever made the smallest advances toward a discovery
of a method of flying, or of aerial navigation.

Archytas of Tarentum, a celebrated Pythagorean philosopher, who
flourished about four hundred years before the Christian era, is indeed
said to have constructed a wooden flying pigeon; but, from the imperfect
accounts transmitted to us of its machinery, there is every probability
that its flight was one of the many deceptions of the magic art which
the ancients so well understood and so expertly practiced. The attention
of man was much earlier, as well as more earnestly and successfully
turned to the art of navigating lakes, rivers, and seas. To gratify his
curiosity, or to better his condition, he was prompted to emigrate, or
to pass from one place to another, and thus he would tax his ingenuity
to discover the means by which he might be enabled to accomplish his
journey. To make the a