In 1687, uneasiness was felt about Ireland, and large quantities of stores were assembled at Chester, for ready transit to that country if required. A large issue of mortars for that service was also made, the calibres being 14¼, 10, and 7 inches, and the diameters of the shells being respectively a quarter of an inch less. Among other guns which occur by name in the Ordnance lists of this year, and which have not yet been mentioned, are culverin drakes of 8 feet in length; saker-drakes of the same; and saker square guns also 8 feet long. In the spring of 1688, his fatal year, King James was advised by Lord Dartmouth to send a young Gentleman of the Ordnance to Hungary to the Emperor's camp to improve himself in the art military, "to observe and take notice of their method of marching, encamping, embattling, exercising, ordering their trains of Artillery, their manner of approaching, besieging, or attacking any town, their mines, Batteries, lines of circumvallation and contravallation, their way of fortification, their foundries, instruments of war, engines, and what else may occur observable; and for his encouragement herein he was allowed the salary of 1_l._ per diem, besides such advance as was considered reasonable." A long and difficult lesson was this which Richard Burton had to learn, and ere it should be mastered the Sovereign who encouraged him should be gone from Whitehall. It was on the 15th of October, 1688, that undoubted advice reached the King that "a great and sudden invasion, with "an armed force of foreigners, was about to be made, in a hostile manner, upon his kingdom;" and although it is not contemplated to describe the campaigns of the pre-regimental days, a description of the train of Artillery with which he proposed to meet the invasion, and which was prepared for the purpose, cannot fail to be interesting. It is the most largely officered train which we have as yet met; and it was announced that, should the King accompany it at any time himself, it should be further increased by the presence of the Lieutenant-General of the Ordnance, the Comptroller- General, the Principal Engineer, the Master-Gunner of England and his Clerks, the Chief Firemaster and his Mate, the Keepers and Makers of the Royal Tents and their Assistants. Exclusive of these, whose presence was conditional, the following was the _personnel_ of _James II.'s Artillery Train to Resist the Invasion of 1688_.