The Sun.
London, England, 1860-07-31 00:00:00

TEE ARMY.

Some experiments are shortly to be made upon
the Whitworth and Armstrong breech-loading
Artillery guns, some officers and others qualified
to give an opinion being doubtful whether the
Whitworth and Armstrong breech-loaders will be
found equal to the actual
,contingeyeies of war;
In order to test this question by the only prac-
ticable method, it is intended to make some trials
of both kinds of guns by firing some shots at the
breech-loaders, for the purpose of ascertaining the
effects produced upon them when struck by shot.
Intelligence has been received at the Royal En-
gineer Establishment, Chatham, by the arrival of
Captain A. R. Lempriere, RE., from Vancouver
Island, of the progress of the expedition of Royal
Engineers under Lieut.-Col. J. S. Hawkins, em-
ployed in surveying the boundary between the
British possessions and the United States. With
the exception of two or three men who have been
sent home invalided in charge of Captain Lem-
priere, the whole of the officers and men of the ex-
pedition were in perfect health. Great progress
had been made in the execution of the work for
which the expedition was despatched from Eng-
land, and the surveying parties were pushing for-
ward in all directions. Their chief camp is formed,
for the present, at Dallas, State of Oregon, but the
depot from which they draw their supplies, and
which, in fact, forms the base of their operations,
is at Esquimalt, Vancouver Island. During
the progress of the survey both officers and men
have had to undergo what would probably be
deemed in this country severe hardships ; but these
are considered as of comparatively no moment in
the prosecution of the scientific duties the expedi-
tion is engaged in. The members of the expedition
are furnished with all possible comforts, and both
officers and men aro supplied with revolvers in case
of being attacked in any of the forests through
which the progress of the survey necessitates them
passing. They are also provided with waterproof
portable tents, portable India-rubber boats, and
every other requisite.
The Ty burnia, hired troopship, lying at Spithead,
embarked the following troops yesterday for. Cal-
cutta, they being conveyed to her at Spithead from
the dockyard by Government steam-tug, viz. :
Second battalion Rifle Brigade—Ensigns Reed,
Hon. Hood, and Harrington, Mr. Salmon, scripture
reader, and 1 drummer and 145 rank and file. Third
Battalion Rifle Brigade—Lieut.-Col. Hardinge in
military command, Capt.Ruthven, Ensigns Caulfield
and Innis, 2 drummers, and 32 rank and file. The
Tyburnia proceeds on her voyage to-day.

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THEATRE-ROYAL, HAYMARKET.
Lessee, Mr. J. B. Bnokstone.
THIS EVENING the oertormanoes will oommenoe with
THE OVERLAND ROUTE. Messrs. Charles Mathews,
Buckstone, Compton, Chippendale. Rogers, Mrs. Charles
Mathews, Miss Weekes, and Mrs. Wilkins.
After which, the new comedietta, HIS EXCELLENCY,
iu which Mr. and Mrs. C. Mathews will appear.
To conclude with A HUSBAND AT SIGHT.
Commence at 7.