about five o'clock
As there was no wind , the conditions were ideal for an aerial flight , and Norman having once shaped his course , the powerful car sped on its way as if sliding downhill . In time the monotonous whir of the propellers appeared to have its effect upon Colonel Howell , and Norman caught him dozing more than once . He then explained to his passenger that his observations were no longer necessary and persuaded Colonel Howell to wrap up in his blanket and go to sleep . When the passenger aroused himself , about five o'clock , Norman asked him to make some tea and see what Philip had prepared in the way of food . It was his only way of relaxing under the strain and he ate heartily . Later , Colonel Howell again pulled his blankets about him and did not stir until the gray of the winter dawn was in the air . The moon had long since disappeared but the stars were brilliant .