about
eleven o'clock
Wyatt 's three rooms were in the after-cabin , which was separated from the main one by a slight sliding door , never locked even at night . As we were almost constantly on a wind , and the breeze was not a little stiff , the ship heeled to leeward very considerably ; and whenever her starboard side was to leeward , the sliding door between the cabins slid open , and so remained , nobody taking the trouble to get up and shut it . But my berth was in such a position , that when my own stateroom door was open , as well as the sliding door in question -LRB- and my own door was _ always _ open on account of the heat -RRB- , I could see into the after-cabin quite distinctly , and just at that portion of it , too , where were situated the staterooms of Mr. Wyatt . Well , during two nights -LRB- _ not _ consecutive -RRB- while I lay awake , I clearly saw Mrs. W. , about eleven o'clock each night , steal cautiously from the stateroom of Mr. W. , and enter the extra room , where she remained until daybreak , when she was called by her husband and went back . That they were virtually separated was clear . They had separate apartments -- no doubt in contemplation of a more permanent divorce ; and here , after all , I thought , was the mystery of the extra stateroom . There was another circumstance , too , which interested me much .