The plot seemed to be very well laid; but, unfortunately for the contrivers of it, it was not destined to succeed. In the first place, Mazeppa's scheme of revolting with the Cossacks to the enemy was discovered by the Czar, and almost entirely defeated, before the time arrived for putting it into execution. Peter had his secret agents every where, and through them he received such information in respect to Mazeppa's movements as led him to suspect his designs. He said nothing, however, but manoeuvred his forces so as to have a large body of troops that he could rely upon always near Mazeppa and the Cossacks, and between them and the army of the Swedes. He ordered the officers of these troops to watch Mazeppa's movements closely, and to be ready to act against him at a moment's notice, should occasion require. Mazeppa was somewhat disconcerted in his plans by this state of things; but he could not make any objection, for the troops thus stationed near him seemed to be placed there for the purpose of co-operating with him against the enemy. In the mean time, Mazeppa cautiously made known his plans to the leading men among the Cossacks as fast as he thought it prudent to do so. He represented to them how much better it would be for them to be restored to their former liberty as an independent tribe, instead of being in subjugation to such a despot as the Czar. He also enumerated the various grievances which they suffered under Russian rule, and endeavored to excite the animosity of his hearers as much as possible against Peter's government. He found that the chief officers of the Cossacks seemed quite disposed to listen to what he said, and to adopt his views. Some of them were really so, and others pretended to be so for fear of displeasing him. At length he thought it time to take some measures for preparing the minds of the men generally for what was to come, and in order to do this he determined on publicly sending a messenger to the Czar with the complaints which he had to make in behalf of his men. The men, knowing of this embassy, and understanding the grounds of the complaint which Mazeppa was to make by means of it, would be placed, he thought, in such a position that, in the event of an unfavorable answer being returned, as he had no doubt would be the case, they could be the more easily led into the revolt which he proposed. Mazeppa accordingly made out a statement of his complaints, and appointed his nephew a commissioner to proceed to head-quarters and lay them before the Czar. The name of the nephew was Warnarowski. As soon as Warnarowski arrived at the camp, Peter, instead of granting him an audience, and listening to the statement which he had to make, ordered him to be seized and sent to prison, as if he were guilty of a species of treason in coming to trouble his sovereign with complaints and difficulties at such a time, when the country was suffering under an actual invasion from a foreign enemy.