midnight
Edgar asked Rupert . `` They are not quite full bred . It is very rare to meet with them , and the price is extremely high ; but these are nearly full bred , and can swing along as fast as a horse can trot , and keep it up for twelve hours at a stretch . '' The march was resumed at midnight . The two sheiks rode ahead , Edgar and Rupert followed on the heiries , while Yussuf was mounted on one of the spare camels , and rode with the other Arab in the rear . The two brothers talked by turns , and both were surprised when the first streak of daylight appeared . The party now separated , the sheik 's wife and child taking their seats on one of the camels .