The Sun.
London, England, 1861-05-20 00:00:00

Hobart Town, 1,516 Moreton Bay, 597 New Zealand, 1,063
Cape, 227 Table Bay, and 174 Port Natal.

LLOW.

The tallow market is st;
the business doing is very
58s per cwt. on the spot,
months' delivery. Rough

;ady to-day as regards prices; but
moderate. P.Y.C. is quoted at
E, and at 55 for the last three
fat 2s lld per 81b.

1857. 1858. 1859. i 1860. 1861.
•
Stock this day.... 11,888 10,910 5,501 -----28,562 66.967
Price of Y.C.
f 58s6d to 53s 9d to 55s Od tc)s2B6d to 58s Od to
..
—s Od —s Od —s Od —s Od —B.od
Delivery last week 1,24 Si i ,971 ,905 1,316
Ditto from June.. 105,382 101,259 97,608 77,908 77,331
Arrivals last week 3,063 2,020' 405 736 674
Ditto from June 11100,290 103,156 91,546 94.39 117,20 t
Price of Town .... 588 Od 54s 5d 55s 9d 52s Od 568 6d

POLICE INTELLIGENCE.—(This Day.)

MARLBOROUGH-STREET.
ALLEGED POSSESSION OF STOLEN PROPERTY.—Thos.
Gilfillan, described as a general dealer, of Castle-street,
Leicester-square, was charged, before Mr. Tyrwhitt, with
being in possession of a large roll of canvas and other pro-
perty, believed to be stolen.

Mr. Lewis, sen., appeared for the prisoner. •
From the evidence of Sergeant Harrison it appeared that
on Saturday night, about half-past ten, ho saw the prisoner
come up Cecil-court with a large roll of canvas on his
shoulder. He went after prisoner, who passed his own
shop in Castle-street, and asked what he had got. He
replied, " a roll of canvas," and that he was going to take
it to St. Martin's-lane, where he had to meet a man, bat
as he had come from that direction he took him into
custody.

Butcher, 137 0, proved going into prisoner's shop some
time after the prisoner was taken into custody, and while
waiting outside he saw the prisoner's servant girl come out
with a small roll of canvas of a finer description than the
largo one.

Mary Ann Smith, the prisoner's servant, said her mis-
tress told her to take the roll of canvas and to go with a
man who was in the parlour. She went out bgo with the
man when the constable came up to her and stopped her.
Inspector Holden said some new hearthrugs were found
at the prisoner's house.

Mr. Tyrwhitt remanded the prisoner, offering to take
,wo sureties bail in £2O each for his future appearance.

DOCTOR GRIMALDI'S ROTATORY
BOILER.

When steam-engines were first made available
for raising water and other purposes a great
stimulus was given to mining operations, and
manufacturers and the general public were satisfied
with the results obtained ; but it was only the few
enterprising and daring spirits who had triumphed
so far who were not content, and still struggled on
through difficulties and against opposition to
greater results ; and it was only slowly, step by
step, that the steam-engine advanced to its
present excellence. Changes come about so
gradually that it is only by looking back that we
can see the advance that science has made. When
George Stephenson obtained the sanction of Par-
liament for the construction of the first railway, he
was advised not to guarantee more than 12 miles
per hour, lest the Legislature should deem him an
imposter, and for some time after 30 miles per hour
was the greatest speed which could be obtained
from a locomotive engine. What would our ex-
press travellers say to' that now ? Dr. Grimaldi
has made a :aitep in progrec3, by the invention
of his rotatory boiler, the object of which is
to effect a saving in fuel, durability in the boiler,
and an economy in space. We recently inspected'
a boiler of this description at Mr. Knowelden's
machine shop, Chapel-place, Long-lane, Bermond-
sey. The boiler in question is of three horse power
and in shape is cylindrical, with curved end, to
which trunnions are affixed upon which the cylin-
der revolves. One of these is tubular, to allow the
steam to escape to the steam-chest, and for the ad-
mission of water. The extreme length of
the boiler is 19 inches and its diameter
18 inches. It is constructed of ordinary boiler plate.
The fire-grate is. 16 inches long by 12 inches
broad, and the whole is entirely enclosed in brick-
work. Over the boiler there is a supplemental
flue, intended to carry heat to the steam chest,
which is situated in an enlargement of it, for the
purpose of superheating, after which it joins the
main flue. The revolutions of the boiler are about
1+ per minute, the rotation being effected by an
endless strap connected with the engine. During
seven hours the quantity of coal consumed was
1221 b., and during that time 90 gallons of water
were evaporated.

This being the first boiler of the kind employed,
it is of course susceptible of improvement; but
these results from the present trial are
conclusive, namely, that economy is effected
by bringing all parts of the cylinder in
contact with the fire, for while the boiler was
rotating the pressure of the steam was 72 lbs., but
the strap being put out of gear in a few minutes it
fell to 64 lbs., and on the boiler being again put in
motion it again rose to the higher pressure. It
stands likewise to reason that where the fire acts on
all portions of the surface the boiler must last
longer than when it acts only on a potion;
and lastly, the same power is obtained from this
boiler of only 19 inches in length, which, in the
ordinary common boilers, would require a length
of about six feet. For small steamers it would be
invaluable, as also for workships, and where space
is an object of great importance. Objections
may be raised as to its liability to get out of
repair, but we do not see that the objection applies
to this more than other mechanical contrivances.
There are one or two minor points on which an
improvement might, and doubtless will be? effected ;
but this will be, .of course, a matter of experience,
and we consider Dr. Grimaldi's invention well
worthy the inspection and consideration of scienti-
fic engineers.

DISCONTINUANCE OF THE PACKET
SERVICE BETWEEN GALWAk AND
AMERICA.

The Atlantic ROyal Mail Steam Navigation
Company having failed to fulfil the stipulations of
their contract for the conveyance of mails between
Galway and America, the Postmakter-General,
with the approval of the Lords Commissioners of
her Majesty's Treasury, has declared that contract
at an end.

No mails for Newfoundland or the United States
will therefore be despatched from Galway on Tues-
day next, the 21st inst., or on any succeeding
Tuesday.
All letters, Bcc., for Newfoundland will hence-
forth be forwarded via Halifax.
By command of the Postmaster General,
ROWLAND HILL, Secretary.
General Post-office, 18th May, 1861.

SEEDS.
Linseed and rapeseed are firm in price; but the business
doing in all other seeds is on a very moderate scale, at
about previous currencies. The cake trade is dull, and
prices have a downward tendency.
Turnip,White,p.bus 35s to 38s
Swede —s —s
Mustard, Brown Bs 12s
White, new.... 5s 108
Tares,
Old per quarter 36s 40s
Canary, per quarter 30s 50s
Rye grass, new 26s 28s
Clover, Red Eng., et —9 —s
White -s -s
Foreign Red.... 459 85s
White. 65s 86s
Trefoil, new. ....... 20s 28e

Carraway
Coriander ... lB3 206
Hempseed, per qr 443 48s
Linseed,Eng.sowing 623 663
Crushing 538 608
Baltic

Odessa
Linseed Cake, p ton 54s 58s
English £lo Os XII Os
Foreign £9 IPs 11 5s
Rape Cakes,p ton 51 lOs 61 Os
Rapeseed. pqr 70s 76s