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 assaults made on the Confederate works were met with determined courage and repulsed with great loss of life. The control of the river by the gunboats, above and below, made the reception of reinforcements or supplies from the west or from any source by water, impossible. The land forces spread around the fortifications cut off succor from the south and east, so that it became a mere question of time, before starvation would compel a surrender without more waste of life in hazardous and bloody assaults. When Pemberton marched to the Big Black, the supply of food in the city was low; on his return his army was placed on short rations. Constant service on the fortifications, inadequate food supply and midsummer heat developed a great deal of sickness, so that when the surrender was made on the 4th of July, after a siege of forty days, provisions were about exhausted, and one third or more of the garrison were on the sick-list, unfit for military duty. It is perhaps not out of place to say that in no campaign of the Civil War was there higher courage or greater devotion to soldierly duty displayed than here, by both participants. The events of the siege derive their true significance from the circumstance