One of the results attendant on the accession[10] of the Scotch king to the English Crown necessitated important improvements in the system of horse posts, for which it called loudly. Immediately on his accession, the high road from Edinburgh to London was thronged night and day with the king's countrymen. All ordinary communications fell far short of the demand; so much so, that post messengers riding from the Council at Edinburgh to the king in London, or _vice versâ_, were stopped whole days on the road for want of horses, which had been taken by the Scottish lords and gentlemen rushing forward to the English capital to offer their congratulations to his majesty. As a remedy, the lords of the English council issued a proclamation, calling upon all magistrates to assist the postmasters "_in this time so full of business_," by seeing to it that they were supplied with "fresh and able horses as necessitie shall require." They were to be "able and sufficient horses," well furnished "of saddles, bridles, girts and stirropes, with good guides to look to them; who for the said horses shall demand and receive of such as shall ride on them the prices accustomed" (_Book of Proclamation_, 1603-1609). As the general intercourse between the two capitals now promised to be permanent, and travelling along the North Road increased rather than diminished, further general orders were published from time to time by royal proclamation. Two kinds of post were established during the reign of James the First, both being in operation together towards its close. They were known as the "_thorough post_," and "_the post for the packet_." The first, consisting of special messengers who rode "thorough post," that is, through the whole distance "with horse and guide," was established in 1603. The couriers were ordered to pay at the rate of "twopence-halfpenny the mile" for the hire of each horse, and to pay in advance. Further, they must not ride any horse more than one stage (or seven miles in summer, and six in winter), except "with the consent of the post of the stage at which they did not change." For the service of the second post, or "_the post for the packet_," every postmaster was bound to keep not less than two horses ready, "with furniture convenient," when on the receipt of a "packet" or parcel containing letters, from a previous stage, he was to send it on towards the next within a quarter of an hour of its receipt, entering the transaction in "a large and faire ledger paper book." As a further precaution, and in order to prevent the courier loitering on the road with any important despatch, each postmaster was required to endorse each single letter with the exact time of the messenger's arrival, just as we have seen in the case of the one found in the collection of Archbishop Parker's correspondence. For the purposes of this packet-post, we find it arranged that each postmaster should have ready "two bags of leather, at