The Sun.
London, England, 1865-08-12 00:00:00

BRISTOL SUGAR-FRIDAY.

There is scarcely any demand for raw or refined sugar,
and very few sales have been made this week. Prices are
fully 6d per cwt. cheaper. Rum is in good demand at full
prices.

COAL MARKET.
Price per ton at the close of the market.

s. d. s. d.
Carway and Duffryn Byass's Bebsida West
Malting 24 0 Hartley l6 9
Tees
Heugh Hall l9 0 Hartlepool
Cassop
Eden Main
South Hetton
Hetton .. 20 0 South Hartlepool l9 0
Kelloe
Ships at market, 40 ; sold, 36.

Foreign Mail Packet List.

MAILS DUE.

Australia and New Zealand, via Southampton Aug. 18.

Ditto, via Marseilles Aug. 12.
Brazil and Cape Verde, by British packet Sept. 4.
Ditto, by French packet Aug. 22.
Cape of Good Hope, Ascension, and St. Helena Aug. 21.
China. Penang. and Singapore, via Sotchampton Aug.
Ditto, via Marseilles Aug. 12.
Falkland Islands

Gibraltar, via Southampton
India (Calcutta), and Ceylon, via Southampton Aug.
Ditto, via Marseilles . ....Aug. 12.
India (Bombay), via Southampton. Aug.
Ditto, via Marseilles ... Aug. 19.
Mauritius, via Southampton Aug. 10.
Ditto, via Marseille 3
Newfoundland
Portugal
Ditto, by private ship to Lisbon..
United States and British North America, by Bri-
tish packet
Ditto, by United States packet, via Bouthamp-
tun
Ditto, via C.:rk

Ditto, by Canadian packet, via Londonderry Aug. 11.
West Coast of Africa. Madeira, and Tenerife Aug. 10.
West Indies and Pacific (except Bahamas, Cuba,

. _ .
and Mexico
Bahamas, via New Y ork. Aug. 16
Bermuda, ditto Aug. 30.
Cuba and Mexico

DIOCESS OF BATH AND WELLS.—The Prince of
Wales's living of 'S tratton-on-the-Fosse, near From, value
£ll5 per annum, with a residence, is vacant by the decease,
at an advanced ago, of the Rev. James Hardy, instituted in
1858. Mr. Hardy was previously curate of the parish.
VENTILATION. Gen. Morin last week read a
paper to the Academy of Sciences on the ventila-
tion of public buildings. The fundamental principle of
good ventilation, he observed, was this : To draw off the
vitiated air from the stratum nearest the floor, that is, in
the immediate vicinity of the persons in the room, and to
admit pure air through the ceiling or apertures made in
the walls close to it. In winter the air to bo introduced
may be previously warmed by an apparatus placed under
the roof ; but in summer considerable difficulty is en-
countered in lowering the temperature of the air to
be admitted, since the sun having darted his rays
upon the roof during the day, the space under the roof
is so hot that, instead of admitting cool air, it penetrates
into the building at a much higher temperature than that
of the interior. General Morin has tried four different
plans for cooling the air; the first consisted in making it
pass through a space filled with pulverised water, that is,
reduced to a sort of dust, as it were, by making two jets
of water strike against each other with great violence.
By this method the temperature is only lowered by
two degrees, and, moreover, it would require a con-
siderable quantity of water and costly machinery to
effect it, unless an ample water-power were at com-
mand. The second plan consists in making the air
pass along the sides of metallic vessels containing
water, which may, if necessary, be cooled with ice ; but
here again there is the difficulty of giving the cooling sur-
faces a sufficient development, a condition which cannot
easily be complied with, and which, therefore, in point of
fact renders this method impracticable. The third consists
in making openings on that side of the building which is
never exposed to the action of the sun, while the vitiated
air is drawn off through metallic tubes, the draught of which
is increased by the action of the solar rays to which they
are exposed. On the side exposed to the sun the windows
should be closed with blinds, as in the case of skylights the
glass panes may be watered outside. The fourth process
will be easily applicable as soon as Paris can command
abundance of water by the new aqueduct of the Dhuys.
It imitates the natural effect of rain, and is very efficacious,
since one cubic metre and a third per hour will suffice to
water 100 square metros of roofing, which will thus be
prevented from being overheated by the sun. Applied
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operation of watering need not be
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