During the five years which immediately followed the Union, and which ended on the 1st May 1712, the average annual sum paid into the Exchequer by the Scottish Post Office, was £6000.[23] From the time of the Act of Anne, the establishment in Scotland was governed by a Deputy Postmaster-General, under the authority of the Postmaster-General of Great Britain, to whom all matters of importance had to be referred, and whose sanction required to be given to any matter involving pecuniary outlay. The first Deputy Postmaster-General, under the new arrangement, was George Main, who remained in office till 1715, when he was succeeded by Mr. James Anderson,[24] a writer to the Signet in Edinburgh. There is a collection of this gentleman's papers in the Advocate's Library in Edinburgh, and amongst them some official correspondence, which gives not only interesting information relating to the Post Office, but also as to the state of the country at that period, and it is from this source that precise information is derived as to the condition of the postal arrangements. When Mr. Anderson took office on the 12th July 1715, there was not a single Horse Post in Scotland, Foot Runners being the usual means of conveyance for the Mails. In this manner direct Bags were conveyed from Edinburgh as far north as Thurso, and westward to Inverary. There were three Mails a-week from Edinburgh to Glasgow, and three in return; the runners set out from Edinburgh each Tuesday and Thursday, at twelve o'clock at night, and on Sundays in the morning, and the Mails arrived at Glasgow on the evening of Wednesday and Friday, and on the forenoon of Monday. For this service the Post Office paid £40 sterling per annum, but from the fraudulent dealing of the Postmaster of Falkirk, who made the payments, the runners seldom received more than from £20 to £25.