The Sun.
London, England, 1851-04-18 00:00:00

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o Ly other ohaige of the
mover of the motion, the de-
parties who had tho control
of such establishments. These parties, in their arrange-
ments for the public convenience, would not be influ-
enced by the Corporation of the city of London, and he
(11r. Deputy Harrison) hoped that the members of the
court would not embark in that which would only bring
down arm them the ridicule of their fellow-citizens.

Mr. BENNOCH stated in reply, that if the committee
he had asked for was granted, he was anxious to express
his desire that he should not be named as the chairman.

—(Hear, hear.) His only wish in bringing forward the
subject was to obtain a properly organized system, which
would result in promoting the comfort and enjoyment if
persons visiting the city of London during the present
Exhibition.—(Hear.) His object was further to gskt
the magnificent crypt of Guildhall open to the foreigner,
who might visit the City. That splendid work was
covered with dust and dirt at the present moment. He
(Mr. Bennoch) had been informed by the City architect,
Mr. Bunning, twat it was of the first style of architec-
ture; the workmanship being equal, if not superior, to
that exhibited in any other European city.—(Hear, hear.)
It had been said that it eves not necessary to provide
these sights for the anticipated visitors, as they aught
show to strangers their bridges and their docks. Cer-
tainly their bridges were magnificent structures, many
of them, but their docks belonged to parties whose pri-
vate enterprise had outstripped corporate action.—
(Hear, and No.)
He would leave the matter in the hands
of the Court, being satisfied that if they rejected hie
proposition, he had done his duty in bringing the subject
forward.—(Cheers.)
Upon the motion h being put, the proposition of Mr.
Bennoch was negatived by an overwhelming majority.
The following sums were voted in the course of the
meeting:—To the St. Mary's Hospital, Paddington, 100
guineas; to the Westminster and North London Penitent
Female Asylum, 50 guineas., An application for a grant
from the managers of the Soup Kitchen, in Leicester-
square, was refused.

INSTITUTION OF CIVIL ENGINEERS.
On Tuesday, the 15th, the discussion was
on Commander Heath's resumed
paper " the Nominal
Horse Power of Steam Ll:Tines ;" Wrn. Cubitt,
Esq., President, in the chair.
It was admitted that it would be very desirable to
fix the nomenclature of the power of engines, for
though it was well known that James Watt did
really take as his standard, what he found to be
actually performed by a powerful horse, drawing a
weight over a pulley viz., the equivalent of
33,0001b5. raised one foot high in a minute—let
commercially it had gradually become a custom
among manufacturers to give a surplus of power,
ostensibly as an allowance for the friction and defi-
ciencies of the machine, so that now the mere state-
ment of the nominal horse power had no definite
meaning.
It was, however, contended that the standard of
33,0001b5. should be retained ; and that, supposing
the workmanship to be equally good in two engines,
it was only necessary to compare the areas of the
cylinders, the effective pressure of steam on the
piston, and the speed of the piston, to determine their
relative power. This was, in fact, shown by the In-
dicator, an instrument the value of which was now
universally admitted, and which, when skilfully used,
did really give a true representation of the power of
the engine.
It was the universal custom of Boulton and Watt
to calculate the power exerted by an engine by the
speed of the piston, together with the average pres-
sure of the steam, as shown by the Indicator ; and
although much vagueness and uncertainty had latterly
been introduced into the subject, this was rather to
be attributed to the assumption of arbitrary quan-
tities to represent those results than to any defect in
Watt's standard horse power, which definitely ex-
pressed both the measure of power and the space
through which it acted.
The proposed standard of comparison of the quan-
tity of water evaporated in a given time, by a given
amount of fuel, or the combustion of a given quantity
of fuel in a given time, were shown to be of no value,
as then not only the generation of the steam, but the
administration of it must be considered, and these
were points merely tending to complicate the question.
For pumping engines in Cornwall, the term horse
power was almost unknown, engines being sold to
raise a given quantity of water, which was a stan-
dard easily reducible to that of other districts, where
33,0001b5. was assumed to be the actual power of a
horse.

The commercial question of what a manufacturer
should give as a horse powercould not be discussed, for
the actual power was only a small element in the actual
cost of an engine, that varying with every peculiar
application of the machine ; the surplus power not
given by manufacturers had evidently arisen from a
more perfect machine being now produced, by the
use of tools in the manufacture, the introduction of
metallic rings instead of hemp packing, more perfect
valves and numerous modifications, all of which were
apart from, and independent of, the question of the
original standard, which it was admitted could not be
improved, and should not therefore be altered.
The following paper was announced to be read at

. .
the meeting of Tuesday next, April 2:2—" On Foun-
dations ; Natural and Artificial," by Mr. S. Clegg,
jun., Al. Inst. C.E.

NAVAL INTELLIGENCE.

Sir F. T. Baring. Bart., Rear-Admiral the Hon. M.
F. F. Berkeley, C. 8., the Hon. W. Cowper, and Mr.
Parker, the secretary, have left the Admiralty for the
country during the Easter holidays.
Captain the Hon. R. S. Dundas, C. 8., the newly-ap-
pointed captain superintendent of Deptford dock and
victualling yard, vice Rear-Admiral Sir John 11111, pro-
moted, visited the establishment, yesterdt.y.