Besides the Public Offices there are a number of corporate bodies whose functions are of a public nature and who have the right to fly a special flag upon their vessels at sea. The most ancient of these is the Corporation of Trinity House, a body first incorporated by Henry VIII in 1514. Its flag (Plate XII, fig. 4) may be seen flying upon the Trinity yacht when leading the Admiralty and Royal yachts during a review of the fleet, or when escorting the sovereign at sea; on such occasions the Trinity yacht flies also a white ensign. The duties of this Corporation are, however, mainly concerned with the erection and maintenance of lighthouses, beacons and other sea marks around the English coast. Similar duties in Scottish waters are performed by the Commissioners of Northern Lighthouses, who fly upon their vessels a blue ensign with a white lighthouse in the fly, the Commissioners' own flag being a form of white ensign without the St Patrick's cross in the Union, and with a blue lighthouse but no St George's cross in the fly. Vessels belonging to Lloyds fly a blue ensign with the badge shown in Plate XII, fig. 10. The Port of London Authority, Thames Conservancy, Humber Conservancy, and Mersey Docks and Harbour Board have each their special badge, but these are of no historical interest. The modern Cinque Ports flag (Plate XII, fig. 5) is now never flown at sea, but is flown upon Walmer Castle, the residence of the Lord Warden. (iv) MERCHANT SHIPS As already remarked, the first legislative enactment providing for a distinction between the flags of merchantmen and ships belonging to the Crown was in the year 1634. We shall briefly review the position of affairs in the earlier years of that century. When James I united the crowns of England and Scotland in 1603 the English merchant ships were in the habit of flying the St George's flag at one or more mastheads, while those of Scotland flew the St Andrew's flag in a similar manner. It seems that in the great majority of these ships no other flags were flown, but some of the larger ships, especially those engaged in voyages to foreign parts, seem to have allowed themselves the additional luxury of a striped ensign (which appears to have been displayed only when attacking or resisting attack from pirates or other foreign ships, or when signalling to consorts), and also a number of pendants or streamers, which were probably only used on like occasion, or on occasions of special ceremony or rejoicing. Thus, for the ships fitted out by the East India Company in January, 1601, there was provided "for eche of the shippes 12 Streemers, 2 fflagges and one Auncient." In an inventory of the Company's ship 'Hector' of the preceding September there is mentioned besides "2 ancyents and 28 pendaunts," "a smale flag for the boat spirrit." This is the earliest instance in which I have met with a jack flag for the bowsprit in an inventory, and its use at this date must have been extremely rare and exceptional.