nine o'clock
John Garwell was very busy , and said he would look over the documents the next day . But on the following morning he was called out of town , so the documents were not examined until some days later . As soon as he returned to the office , Nat went to work with vigor for over a week , to make up for the lost time . He had a great deal of writing on hand , and one evening he remained at the place until after nine o'clock . As Nat had been indoors nearly all day , he resolved to walk home , just for the physical exercise and to get the fresh air . He started up Broadway , and was soon as far as Tenth Street . Here he attempted to cross the thoroughfare , but was stopped by a jam of cars and other vehicles .