"Arthur Hensel ... while in the vicinity of 125th Street and Seventgh Avenue ... was met by the defendant Robinson, coloured, and at his solicitation went to certain premises ... for the purpose of having a good time with a colored girl. While in the hallway of the third floor of said premises the said defendant Robinson, together with defendant Haywood and a third man unapprehended, all of whom are colored, held up the said Arthur Hensel at the point of a knife and stole from him the sum of $16.00 ... together with a gold watch and chain valued at about $230."