ÖÖI 8x 3 ^c- 0 - Acehbooks.org

it S U M A T R A .
ward—the land wind has a correfpondence with the next day's fea wind—
and thus the divination is accounted for.
•
The effecl: of the fea wind is not perceived to the diftance of more
than three or four leagues from the fhore in common, and for the moll
part it is fainter in proportion to the diftance. When it firft fets in, it
does not commence at the remoter extremity of its limits, but very
near the ihore, and gradually extends itfelf farther to fea, as the day
advances; probably taking the longer or fhorter courfe as the day is
more or lefs hot. I have frequently obferved the fails of fliips, at the
diftance of four, fix or eight miles, quite becalmed, whillt a frefh fea
breeze was at the time blowing upon the Ihore. In an hour afterwards
they have felt its effect.
Paffing along the beach about fix o'clock in the evening, when the
fea breeze is making its final efforts, I have perceived it blow with a
considerable degree of warmth; owing to the heat the fea had by that
time acquired, which would foon begin to divert the current of air towards
it, when it had firft overcome the vis inertia, that preferves motion
in a body after the impelling power has ceafed to operate. I have
likewife been fenfible of a degree of warmth on paffing, within two
hours after fun fet, to leeward of a lake of frelh water; which proves
the affertion of water imbibing a more permanent heat than earth :—in
the day-time the breeze would be rendered cool in.croffing the fame
lake.
A pproaching an illand fituated at a diftance from any other land, I
was ftruck with the appearance of the clouds, about nine in the morning,
which then formed a perfect circle round it; the middle being a clear
azure; and refembled what the painters call a Glory. This I account
for from the reflected rays of the fun rarefying the atmofphere immediately
over the illand, and equally in all parts, which caufed a conflux
of the neighbouring air, and with it the circumjacent clouds. Thefe laft,
tending uniformly to the center, comprelled each other at a certain dif­
tance