The Sun.
London, England, 1863-05-21 00:00:00

HAY MARK2TS.

SMITHFIELD.—Meadow hay, £2 Os to £4 Os Od ; clover
do., £3 10s to £5 10s; and straw, £1 8s to £1 16s per load.
Trade dull.
CUMBERLAND..—Meadow hay, £2 2s to £4 4s; clovei
do., lOs to £5 lOs; and straw, £1 8s to £1 16s per load.
Supply good.
WHITECHAPEL —Meadow hay, £2 Od to £4 Os ; clover
do , £3 Ids to .C. 5 10s; and straw, Ll 8s to £1 18s per load.
A. full average supply.

SHIPPING—This Day

BY MAGNETIC TELEGRAPH.

GRAVESEND, Thurs lay Morning.
Arrived, May 20—Marieka, from Stockholm ; Antonia,
Collery gall,
from Rostock; Suantje Moenendal, from Groningen.
Arrived, May 21--Auckland, from Rotterdam; Portia,
from Dantsic , Salma, from Gottenburg ; Nicola, from
MarfeSovereign, Eagles, Odessa, and Jensine
, from Dantsio ; Atalanta, from Sudvasthom ;
Margaret and Mary, from Stettin; Sophy, from Nibe;
Pili na, steamer, from Lisbon.
Sailed—Caroline Goodyear, for Mauritius ; Eliza Reubec,
for
for Point de lialle ; Cassange, for Jamaica; Sussex Maid,
Malta ; Chapman, for Bombay ; Urinus, for Demerara ;
Nimrod, for Quebec; Triton steamer, for Boulogne.
DEAL, Thursday Morning.
Passed—Colombo, Swedish brig, from the east for the
west ; Ligon, steamer, of Sunderland. from the west, for
the north; Frances, barque, from Porto Rico, for London;
Nimrod, from London, tor Quebec; Anglo-Saxon, from
London, for Shanghai.
Anchored.—Regina, from London, for Colombo.

LIVERPOOL AND THE DERBY.— It is many years
sinoe there was so much excitement on the Liverpool Ex-
change as there was yesterday afternoon. From 3 o'clsck
until nearly 6 p.m. the flags were crowded, and as soon as
it became known that Macaroni had won the Derby there were
s3veral loud bursts of cheering for Mr. Naylor and his horse.
Mr. Naylor is a Liverpool man, and no doubt this fact caused much more feeling than had any other gentleman's
horse won the blue ribbon of the turf,
A certain number of elfctors at Strasbourg hav-
ing offered their support to M. Odilon Bar rot, that gentle-
man has signified his consent to come forward as candidate,
and has forwarded his authorisation to M. Edouard Gloxon,
Member of the Constituent Assembly of 1848, to sign for
him the oath of allegiance required by the Constitution.
IMPROVEMENT IN AREOMETERS.—M. Pouillet
last week communicated to the Academy of
Sciences a new construction of the Areometer
imagined by himself. The usual instrument con-
sists, as we all know,: of a glass tube with bulb at
one end, which renders it buoyant, and a few drops
of mercury in a separate compartment below the
bulb, to balance it. Beaume, the inventor of this instru •
went, having thus prepared it, laid down the following rule
for graduating it, in order to determine the densities of
liquids :—Put the instrument into distilled water at a tem-
perature of 15 degrees Centigrade (59 Fahr.) ; mark on the
tube the point at which it emerges from the liquid, and call this point zero. Then immerse the instrument into a solu-
tion of 15 parts, in weight, of sea. salt in 85 of water, and
mark the point at which the tube emerges from the liquid, cal
ling it 15. Divide the space bete een zero and 15 into 15 parts,
and continue this graduati n beyond the latter part as fares
convenient. In this manner the density of a liquid will be
accurately determined, by observing how far the instru-
ment sinks into it. Here M. Pouillet remarks that, how-
ever simple Beaume's method of graduating his scale may
appear, it nevertheless has a great defect, uwing to the dr.
cumstance that sea-salt seldom marks the same deg.ee,
being often mixed up with foreign elements which exercise
an influence upon its solution. And as a variation of only
one-thousandth part in the density of the latter may give
rise to a considerable increase or diminution in the degrees,
Pouillet has modified Beaume's method, by using die •
tilled water only for the graduation of the are3meter, at the
same time however modif3 ing the shape of the instrument
in a peculiar manner. His method at the same time
offers a direct method of verification for areoraeters of all