The Sun.
London, England, 1864-06-27 00:00:00

YORK—SATURDAY.
There was a small supply of wheat at market to-day, 1°
good condition. An improved demand, and last week's
rates advanced 2s per qr. Very little barley shown, but
the trade was healthy, and former prices maintained. Oats
in moderate supply, with a ready sale, at nearly is more
money. Beans scarce, and a steady business was done at
prices in favour of the seller.
Wheat, red 37s to 40s Oat 5....
White do .40s to 478 j Beans 32. to 34;
Barley :25s to 28s, Peas Malt, 58s to 60s ....--s to --,e
per qr.; rye, •36s per qr ; flour, 273
to 32s per sack.

GRANTIIAM—SATITRDAY.
Old white wheat,"4ls to 46s ; red, 37s to 42s per 36st•
new white, 39s to 478; red,: 368 to 435. Malting barley,
338 to 36s per qr ; grinding, 26s to 29s ; oats, old, 23s t 7
265; new, 20s to24s; beans, 34s to 375; peas, 35s to 375•

LEICESTER--SATURDAY.
A moderate show of wheat, and a steady business done at
fully 2s per qr over late rates. Barley again came to hand
sparingly, and met a moderate demand at little or no altera-
tion in prices. Oats a healthy trade, and 6d to is dearer.
—New white wheat, 42s to 468; red, 39s to 43s per 36
stone. Old red, 38s to 42s per 36 stone. Barley, malting,
new, 32s to 34s per qr.; grinding, 26s to 28s old oats,
27s to 295; new oats, 20s to 24s per 24 stone. Beano,
old, 40s to 42s per 38 stone ; flour, 25s to 30s per 20 atone.

NO TTINGHAM—SATuRDAY.
A moderate show of wheat to-day, with a fair inquiry, at
2s to 3s over late prices. Barley very limited in supplY'
well taken off, and late prices were supported. Beans in
good demand, at full prices, but scarce. Oats 6d to is up.
—White wheat, from 39s to 44s ; red wheat, 38s to 425.
Barley—malting, 30s to 37s ; grinding, 27s to 295. Oats,
old, at 24s to 30s Od; new, 19s to 255. Beans sold at 385
to 42s per qr. ; new, 358 to 38s.
Flour, fine, 29s to 31s ; simper, 23s to 388:per 20 stone.

DUBLIN—FRIDAY.
A strong attendance to day. Supply moderate, and an
improved demand for both Irish and foreign grain at as
advance of 6d on all wheat and Indian corn. A fair inquiry
for oats at 3d over late rates. Flour steady, but value
unchanged.

o. d
Wheat, white 24 0. to 26 6
Do., red 21 6 to 24 0
Do., new — 0 to --- 0
Barley
Oats
Do., black — 0 to 0

s. d. s. d.Oatmeal lO otol3 0
Beans.. 0 to 2
Bere . - 0v
Rapeseed
Bakers' flour
Indian corn

Foreign Mail Packet List.

MAILS DUE.
Australia and Mauritius, via Southatapton. June
via Marseilles July 14.
brazil and Cape Verds, by British packet. July 5.'
Cape of Good Hope, Ascension, and St. Helena June 29
China, Penang, and Singapore, via Southampton June—.
via Marseilles June 27.

Falkland Islands
••••
Gibraltar, via Southampton June —.
India (Calcutta), and Ceylon, via Southampton June—..
via Marseilles June 27
India (Bombay), via Southampton
via Marseilles July 5.
Portugal....
July 5.
Malta, Egypt, and Men, via Southampton June —.—
via Marseilles July 5.
Newfoundland .
Oporto and Vigo ..
U. S. and British N. Axnarica, by Brit. packet June 30.
by U.S. packet
by Canadian packet June 24.
All parts of West Indies, including Chili, Peru' J June 28.
California. and British Columbia.

PHYSICAL CONSTITUTION OF THE SUN.—Our
readers must recollect the intense interest will
which the public received the announcement of MM. Bunsen
and Kirchoff's wonderful discovery of spectrum analysis,
and the surprise which was caused by the fact that the
chemical constituents of the sun might be determined by
this valuable method of investigation. The conquests of
science, however, are sometimes dearly bought, and the
acquisition of a new theory will occasionally compel us
to relinquish another which, though it answered its
purpose, is found to be incompatible with the new
discovery. This was the case with the constitution
of
the sun according to W. Herschel's theory, which supposed
it to consist of a dark nucleus, surrounded with a high at-
mosphere, the upper part of which only was in a state of
combustion, and was called the photosphere. When a spot
was remarked on the surface of the sun, it might easily be
explained by this theory by saying that the burning enve-
lope had, by some convulsion, been torn open, and that the
dark nucleus thus became visible through the gap. The
faculazt, or wrinkles seen on the burning surface, might
be explained by the vehement action caused by a tem-
perature infinitely superior to any we can produce on
our earth. The instantaneous changes of form observable
in the spots were Equally well explained by Herschel's
theory, and Arago had proved the gaseous nature of the►
photosphere by showing that it did not emit any polarized
light, which it would if it were liquid or solid. But M.
Kirchoff overthrows this convenient theory, by declaring
that the sun's nucleus, instead of being dark, is even more
luminous than the photosphere, because the spectrums
formed by the passage of solar rays through prisms
presents the black bands observed by Wollaston in 1802,
and since studied by Fraunhofer, instead of the brilliant
bands produced by the vaporised metals, constituting the
visible incandescent surface of the sun. Unwilling to forego
the advantages accruing from Herschel's theory, M. Petit,
the astronomer of Toulouse, in a paper addressed to the
Academy of Sciences, describes two observations made by
him for the purpose of measuring the distance of the
nucleus from the photosphere. From this delicate opera.•
Lion it appears that the nucleus, which ceased to be visible
in a spot at a distance of nine seconds from the sun's limb,
was still visible at ten seconds, which by calculation gives
for the altitude of the sun's atmosphere a value equal to
the earth's radius. Hence, Herschel's theory would seem
to be confirmed.—Gab:9mani.