MacPherson describes the recent movements of his troops in suppressing the current insurrection in Pennsylvania, as they attempt to arrest individuals charged with treason. Discusses disposition of different detachments, arrests made, intelligence about the movements of the insurgents; supposes on the opinions of the people in the region, believing that the spirit of revolt was "high and general" before the arrival of federal troops. Believes the situation has stabilized enough that the militia can be sent home, but that the regular troops should garrison the region for the near future. Asks for instructions regarding the dispersion of the regulars into garrisons. A postscript concerns additional persons to be arrested and mail for the troops.