5:30
The words within had been written by the same hand which appeared upon the envelope , but the language used gave him no clue to the purpose of the writer . The brief note read : `` Box 57 University Club . `` Your answer to advertisement makes a good impression , and I am willing to put you to the further test of a personal meeting . If you are in earnest in this matter , and quite prepared to assume the necessary risk , you will be at the north-west corner of Spaulding Park at 5:30 to-morrow afternoon . Do not come in uniform , but it will be well to bring evening clothes in a bag . Be sure of yourself , and be prompt . `` Very truly yours , `` The Advertiser . ''