half past one
But they were not asleep . Some apprehension on the part of even Roy had kept him and the colonel wide awake . When it grew dark and the monoplane had not returned , he made a fire of cordwood and during the long evening renewed it constantly . At half past one the _ Gitchie Manitou _ concluded its second successful trip . The answer brought to Colonel Howell , in response to his telegram , appeared to be highly satisfactory to that gentleman . As he read it in the light of Roy 's poplar wood signal fire , he remarked : `` I told you young men that you did n't know how much you might be worth to me . If I had n't made good on that option , there 's no way to tell what I might have lost .