“The prisoner was tried upon five indictments, three of which were for counterfeiting the notes of the bank of the United States, of different denominations, and the other two for having in his possession bank notes of different denominations, engraved and printed after the similitude of notes issued by the said bank, with intent to use them in forging the notes of the said bank. Upon the trial of these indictments, the following points of evidence were ruled by the court. .1. That the officer who apprehended the prisoner is not bound to disclose the name of the person from whom he received the information, which led to the detection and apprehension of the prisoner.”