eight o'clock in the evening
Mr. Henderson 's clerks also swore that Mr. Dalton wore no pin at all on that morning of the interview . And , finally , an effort was made to prove an _ alibi _ . It was shown that Dalton 's occupation of his time during that evening could be accounted for with the exception of one hour . Witnesses were produced from the hotel where he put up who swore that he had been there until eight o'clock in the evening , when he left , returning at nine . An hour , therefore , remained to be accounted for . As to this hour -- on the one hand , it seemed hardly sufficient for the deed , but yet it was certainly possible for him to have done it within that time ; and thus it remained for the defense to account for that hour . For this purpose a note was produced , which was scribbled in pencil and addressed to John Wiggins , Esq. .