in the Strand on 20 April 1763. It may have been at this meeting that Preston became their second initiate. Unhappy with the status of the relatively new Grand Lodge which they found themselves part of, Preston and some others began attending a lodge attached to the original Grand Lodge of England, and persuaded their brethren to change allegiance. Accordingly, on 15 November 1764, Lodge no 111 of the Antients became Caledonian Lodge no 325 (now 134), under a constitution which was just starting to be known as the "Moderns"; that lodge later held its meetings at the Great Eastern Hotel on Liverpool Street in London. Antient/ancient and Modern referred to the ritual used by the respective constitutions, not to the age of the Grand Lodges. The shift of allegiance occasioned some vitriolic correspondence between Caledonian Lodge and their former Grand Lodge. Caledonian Lodge then became the major component in the first Grand Chapter of Royal Arch Masonry. Preston soon began an extensive program of masonic research. Interviewing where he could, and entering into an extensive correspondence with Freemasons in Britain and overseas, he built a vast storehouse of masonic knowledge, which he applied initially to explaining and organising the lectures attached to the three degrees of Freemasonry. He met with friends once or twice a week to test and refine his presentation, and on 21 May 1772 he organised a Gala at the Crown and Anchor in the Strand at his own considerable expense, to introduce the Grand Officers and other prominent masons to his system. The success of his oration on that day led to the publication, later that year, of his Illustrations of Masonry, which ran to twelve English editions in the authors lifetime, as well as being translated into other languages. In 1774 he organised his material into lecture courses, delivered by him at the Mitre Tavern, Fleet Street. There were twelve lectures per degree, at one guinea per degree. Present at the Gala were two members of the Lodge of Antiquity (once, as the Goose and Gridiron, a founder of the Grand Lodge). John Bottomley was then the Master, and John Noorthouck a colleague of Preston at Strahan's printing firm. Antiquity was suffering from declining membership, and these two men conceived the idea of reviving their lodge by recruiting Preston. He was elected a member, in absentia, on 1 June 1774. On his first attendance