GENERAL ORDERS, ' No. 42. | WAR DEPARTMENT, Adjutant General’s Office, Washington, July 10, 18G1. The Quartermaster’s Department will provide horses and the Ord- nance Department will furnish horse equipments for Volunteer Cavalry Companies upon the requisition of the Mustering Officer, as fast as such companies are mustered into the service. By oKDfiR: L. THOMAS, Adjutant General. Official: Assistant Adjutant General.