[BY TELEGRAPH TO THE HERALD.] LYONS, June 25. — The assassination of President Carnot took place practically in daylight at Lyons last evening.

He was being entertained at a grand banquet by the Chamber of Commerce and he was received with great enthusiasm by an immense crowd outside the building both on his arrival and his emerging to take his departure.

This was about ten minutes past nine and the President’s carriage was drawn up about midway across the place de la Bourse. A military guard of honor was in attendance and police were present in considerable force.

THE ATTACK.

M. Carnot quickly entered his carriage and was about to take his seat when a young, well-dressed man suddenly rushed from the crowd, and before those in attendance on the President had time to interpose themselves the excited stranger had drawn a dagger out of a roll of news papers and plunged it deeply into M. Carnot’s back.