ite effect will be
produced when the sun retreats to the north, and leaves Australia to
cool.

These instances are quite enough, I should imagine, to satisfy
ordinary curiosity on this point; but professional men ought not to be
contented till they have investigated all branches of this important
topic; including that elegant and very useful episode, the land and
sea breezes of all hot climates, and Horsburgh's East India Directory,
which I have quoted above so frequently, is by far the best authority
with which I am acquainted on these subjects. At the same time, I must
not omit to do justice to a beautifully-written and accurate Essay on
Winds and Currents, by that Prince of all Voyagers, Old Dampier; who,
with means far more circumscribed than most of his successors, has
contrived to arrange and condense his information in such a way as not
only to render it available to practical men, but to make it
intelligible and interesting to every class of readers.[4]

FOOTNOTES:

[3] It is necessary to note here that these questions have been
examined since Captain Hall wrote, by Commander Maury, late secretary
to the American navy, in the true analytical spirit, and immense
progress made in our knowledge of these winds by the mass of practical
observations on the subject made by practical navigators, and
published under his directions.--ED.

[4] The principle of "Great Circle Sailing," which now guides the
navigator to the Indian Ocean, must be studied in connection with this
chapter. "For every degree the ship changes her longitude south of the
Line she sails a shorter distance along the great circle than on any
other curve; for on the parallel of 60 deg. thirty miles corresponds to a
distance of sixty at the equator."--ROBERTSON'S _Theory of Great
Circle Sailing_: Bell and Daldy.

CHAPTER VII.

PROGRESS OF THE VOYAGE.

Let people say what they please of the fine bracing weather of a cold
climate, I have never seen any truth-speaking persons who, on coming
fairly to the trial, did not complain of a cold frosty morning as a
very great nuisance, or who did not cling eagerly to the fire to
unbrace themselves again. For my own part, I have always delighted in
the relaxation caused by hot weather; and, accordingly, I have very
seldom, if ever, felt the weather disagreeably warm, even in India,
especially when sailing on the open sea, or enjoying the free range of
a wide country, under awnings and bungaloes, or