Ponce, Porto Rico, Aug. 30.- Details f the homeward movement have been ractically completed. General Miles nd his staff and eight companies oL the Second Wisconsin leave Tuesday night. The Fourth Pennsylvania volunteers are to start home Wednesday. All the cavalry horses, guns and carriages of batteries of Pennsylvania will leave on the Mississrbpi Thursday, while the men of the three Pennsylvania batteries and the Third battalion of the Second Wisconsin will sail the same day on the Concho. The men and guns of the Missouri, Illinois and Indiana batteries are to leave on the Alamo Friday and the battery horses on the Uto Saturday. The Sixth Illinois volunteers will follow on the Séneca and another shlp not yet selected. It has been arrarged that the whole detachment of about 5,000 men will land in Brooklyn. After resting there a few days they will parade -across the bridge to Wall street, to Broadway, to Fifth avenue and thence to Central park. The men in line will be commanded by General Wilson and General Miles will review them. General Brooke is preparing to move to San Juan. One hundred wagons have been sent to him from Ponce to transport supplies across the mountains. Reports of disorder continue, but the authorities believe the outbreaks are Bporadic and will soon quiet down. General Miles will probably issue a proclamation calling for order and decreeing severe penalties for disobedience. The trial by a military commission of twelve civilian prisoners charged with burning the town of Coto begins in Ponce. Colonel Griffin of the First volunteer engineers will preside. The prisonera having no. counsel General Wilson has detailed Major "Walton of the pay corps to act in that capacity. This is the first trial of civilians since the military occupation of the island.