About midnight
`` And so you look for a real chase ? '' `` Surely . Those Sioux on their ponies will hang on like grim death and mighty glad I 'll be when the trees on the first slopes reach out their boughs to hide us . About midnight now , is n't it , Will ? '' The lad was able to see the face of his watch and announced that it was midnight and a half hour more . `` That 's good , '' said Boyd , `` because the darkest part of the night is now coming , and maybe some clouds floating up from the south will help us . Yes , I think I notice a change already .