The Sun.
London, England, 1855-09-19 00:00:00

EXPERIMENTS WITH ELECTRIC AND OTHER

LIGHTS AT WOOLWICH.
On Monday evening last, a lengthened experiment
took place at Woolwich, on the upper part of the Com-
mon, in the presence of the select committee. The ex-
periments were with three different kinds of light, for
war and other purposes. The one, an Electric Light,
which was shown by the •perator, Mr. Ingliss ; the
second, the Drummond, or Lime Light, shown and
operated upon by Sergeant R. P. Jones, of the Royal
Sappers and Miners ; and the third, the Bude Light, by
a Mr. Gurney, residing in the county of Cornwall, who
is the original inventor, but has entrusted it to the care
of Sergeant Jones, who is a most intelligent and scien-
tific officer, and who is labouring hard to bring it to per-
fection.

The three lights were all in readiness on the top of
the mound, round the reservoir on the bp of the Com-
mon, at 8 o'clock, and at half-past 8 several members of '
the committee arrived, among whom we noticed General
W. Cater, R.A., Colonel W. IL Pickering, R.A.,
Colonel A. Tulloh, R.A., Colonel Cole, R.E., and nu-
merous other officers whom we could not recognise
through the dazzle of the lights.
The relative powers of each were minutely entered
into by the various gentlemen of the committee, and
the electric light was shown to the officers, which is
caused by a reflector being placed behind the electric
light, and With which Mr. Ingliss purposes to bring ob-
jects visible at a distance of one mile, but was not
realised on this occasion. The Drummond or Lime
Light was also shown by means of parabolic reflectors,
which caused a most excellent light at a great distance,
and made objects visible at a distance of from 500 to
600 yards ; but, on a clear night, an object can be seen
distinctly at a much greater distance. The next was the
Bude Light, which can be carried by hand, and which
the sergeant explained to the committee, and likewise
operated upon it in their presence, so that it reflected a
light at from 300. to 400 yards, showing objects dis-
tinctly at that distance.

For the purpose of ascertaining the correct distance at
which the lights reflected, a number of the Royal,Ar-
tillery were brought on to the Common, and drawn up
at different distances, and which were moved about ac-
cording to the wishes of the operators.
A mere unfavourable night for. the experiment could
scarcely have been chosen, as, during the whole time, a
dense heavy moist atmosphere prevailed, causing the re-
flectors to loose their power, more especially that of the
Drummond light, which was exposed the whole time,
while the reflector of the electric light was protected
from the weather by a sort of casing roand the three
sides. The reflectors got so damp as not to have the
power of penetrating so far as they otherwise would have
done had the weather been clear and dry.
We cannot refrain from stating that the electric light
certainly has the power of penetrating further, and pro-
duces more brilliant light, but the Drummond light has
its advantages over the other in many respects, although
producing not quite so clear a light on this as on former
loicgchats nis ms .0 r
a 0 npe great o advantagertable,
and se,
can be
be thatcar rtih
edeb
ytDrummondtwo
oor
three men, each taking a portion of the apparatus, while
the electric light is so cumbersome as to require a wag-
gon, drawn by two horses, to convey it from place to
7
/nue.

CHOLERA.—Since the 10th of June, up to the present
date, there have been about 1,900 cases of cholera in
Dantzic, of which 1,200 have terminated fatally. There
were, up to the 13th Sept., 631 cases in Stettin, of
which 347 were deaths, 137 recovered, and the remain.
der were under treatment.
NAVAN FAIR, Sept. 17.—Our September fair was held
on Monday, and notwithstanding the unfavourablenesa
of the weather in the forenoon, the supply,of cattle, &c.,
including a good deal of stock shown by the wealthy
greater than that of sea.
feeders of this county, was not inconsiderable. In ad-
dition to the ordinary early trains from Drogheda
e f those
uotpetdor i
ma: attendfbrfrom
fin the
sd.f_a itr:
ppastrceciedtheapeDeuiabilitnraaninsd
aDtraongheeadraly
Rail-
way Duleck, and Beau
lers, which had the effect of giving an Upward tendency
Thefwoar y
theat Company
conveyancendaneed
ue
fsb u 1
erswas
e sold at
kaninddsmoafy sbtoackci.
about same rates as those obtained a week previously at
60. per lb. The demand was good. The exhibition of
skeep was also tolerable, they brought high prices,
ton ranging frem 61d. to 7d. per lb. _ mut-
ton the e fairprices
o to f
Sells, most
not in demand, but stores were sought Bacon pigs were
after, and sold at
advanced prices. Slips fetched
225. each, and suckers from ._ _ generally from 19s. to
moderate show of horses, _2Bs. to 365. per pair. A.
and sellers appeared satisfied
with the sums realised for the animals disposed of. Some
crack ones brought a
high figure. Taking the fairon
the whole, the effect of the late successful news from the
seat of war would seem to make everything look upwards.
BANAGHER GREAT ANNUAL Fars.—MONDAY.—The
horse fair was held this day, and the show was very nu.
merous, but chiefly of an inferior description. Exceed.
ingly high prices were asked, but very few sales were
effected. The morning wore a lowering aspect; and
about one o'clock the rain commenced and continued
during the afternoon, which caused a clearance of the
streets much earlier than usual. Contrary to all expec-
tation there were but very few buyers for the army, and
they purchased but a small number of strong colts.
Colonel Roberts bought some very fine three-year-olds
for the constabulary, but did not succeed in getting the
full number he required. The demand in this class was
slack, except for strong ones, which brought remunerat-
ing prices, ranging, according to size and quality, from
201. to 401. There were plenty of buyers for aged horses,
but feu of a good class were exhibited for sale. Good
useful animals for farming purposes sold. freely, from
15/. to 25/. ; but hacks and horses in that line were not
in much request, and the greater portion being so bad
were unsaleable. The fair for holders of horses was a
bad one, and many this day were anxious to effect sales
at fully five per cent. below the prices which they were
offered in the.stables on the tworpreeeging days. There
Was a large attendance of English and Dublin dealers.
One of the former purchased upwards of twenty young
colts. The highest price obtained was 851., by My.
1 Lloyd, of Lloysborough, for a six-year old untried horn;
I And Mr. Banbury, of I,,isbryan, got 804 for another.