The Sun.
London, England, 1831-07-12 00:00:00

WARSAW, JUNE 29.

(PRIVATE CORRESPONDENCE.)
I write in great haste to give you a brief account of
events which have occurred here this day, and which
cannot fail to awaken the most lively interest in all who
have any regard for the patriotic cause in which Poland is
now engaged ; but, lam sorry to add, that they will be
looked upon by all with regret. Treachery, foil and un-
hallowed treachery, has stolen under the banner of Liberty,
and which, if not discovered, might have blighted her cause
for ever.
In my last letter I informed you of the suspicions which
had been attached to the conduct of General Jankowski
in the battle near Kock ;—that suspicion has been found
to be too true ; there has been subsequently no doubt of
his guilt, and of his treachery to the cause of Poland. In
order, however, to avert that death which eventually
awaited him, he has disclosed the names of those indivi-
duals concerned with him in a plot as diabolical as exten-
sive, and as dangerous as any the annals of history can
afford, and the particulars of which I am now going to
give you a short, and necessarily at the present moment, a
very superficial account.
It appears that some of the officers in the Polish service
have long been faithless to its cause, and it is not yet
known to what extent it has been carried. This party,
however, had succeeded in establishing a strong and dan-
gerous conspiracy, the intention of which was to produce
a counter-revolution in Warsaw, in favour of the Rus.
slims, and which was to have taken place in the following
manner, had it not been prevented by a providential and
timely discovery.
To-day is here a great Saint tby (St. Peter), and fetes
are held by the inhabitants in all parts of the town, and,
consequently, this was the day fixed upon by the traitors
for the accomplishment of their plot.
The Russian prisoners here are upwards of 13,000,
and are allowed to go at large, and it was through their
agency that the scheme was to have been attempted ;
they were to have been provided with arms, and,
When the signal was given (the blowing up of the
powder-mill), they were to have risen in all parts
of the town, and attacked the inhabitants and the
National Guard, and Heaven alone knows what
the consequence might have been. The information,
however, given by Jankowski, came just in time to says
Warsaw from the dreadful massacre. The National Guard
Was called to arms, and each street was placed under a
strong guard; but in the mean time eight of the conspi-
rators were arrested, and also three ladies, who are said to
be deeply implicated. Some have made their escape ;
but no man is allowed to pass the barriers of Warsaw, and,
consequently, there is no doubt but that all will be disco-
covered. Upwards of three hundred were supposed to be
connected with the conspiracy. The streets have, to-day,
been in complete uproar, and it was with great difficulty
that the conspirators could be saved from the effects of po-
hular fury. Their names are Generals Jankowski, and
is brother-in-law, Buchoski ; Genet als Austeig, Sla-
nackl, Roustenstarde, Raedel, and Bontemps, of the artil-
lery; the two latter are French ; Colonel Slupacki, and
also Madame Leese!, in whose house were discovered three
Millions of dollars, and five millions of Polish florins;
with two other females.

Their trials will take place to-morrow and the next
(lay ; but the evidence appears too strong against them to
admit of any chance of their being saved from that death
which they so justly merit. The guilt of General Bon-
temps, who had the entire management of the artillery, is
said to be-enormous. Many of the new cannons, under
his management; are known to have burst in the field.—
The names of the traitors have been posted in hand-bills,
in the streets, in an address from Ski zynecki to the Na-
tional Guard. Such is a brief account of this extraordi,
nary affair. It appears that Poland, in addition to the
Isroiene force of the largest empire in Europe, has had to
,vainst the basest treachery in her own ranks. I
have Writii*, hastily, and what I have related I have done
briefly ; but I will write again by the next post on Mon-
day, wheel I hops to give you a longer account.
The Russfans were said yesterday to be within twelve
ante., (English) of Warsaw. The command has devolved
upon General Paskewitseb, who is by birth a Pole.