J. L. Riker Post, No. 62, Posts Nos. 32 and 38, the Anderson Zouaves, Bohemian Sharpshooters, the Veterans of the Eighth and Eleventh Regiments, and all of the singing societies who attended the fair of Riker Post last May are to go on an excursion up the Hudson to Sing Sing, Sunday, Aug. 17. A steamer and two barges will leave Eighth-street, East River, at 8.30 A.M., making landings at Delancey-street, and at Tenth and Thirty-fourth-streets, North River.