These Instructions were transcribed by Mr. Malone from a MS. preserved in the library at Petworth, and by the late Earl of Egremont I was authorised to lay them before the Society of Antiquaries. They form the second of three treatises, all of which were written by Henry Earl of Northumberland, and addressed to his son. The first, written in 1595, consists of thirty-three pages, and is without a title; but we may gather from the introductory paragraph of the following paper, that its object was similar to the present one.