In Samuel Johnson's retrospective view, the Yale of 1710 at Saybrook was anything but progressive with its "scholastic cobwebs of a few little English and Dutch systems."[i-39] The year of Johnson's graduation (1714), however, Mr. Dummer, Yale's agent in London, collected seven hundred volumes, including works of Norris, Barrow, Tillotson, Boyle, Halley, and the second edition (1713) of the _Principia_ and a copy of the _Optics_, presented by Newton himself. After the schism of 1715/6 the collection was moved to New Haven, at the time of Johnson's election to a tutorship. It was then, writes Johnson, that the trustees "introduced the study of Mr. Locke and Sir Isaac Newton as fast as they could and in order to this the study of mathematics. The Ptolemaic system was hitherto as much believed as the Scriptures, but they soon cleared up and established the Copernican by the help of Whiston's Lectures, Derham, etc."[i-40] Johnson studied Euclid, algebra, and conic sections "so as to read Sir Isaac with understanding." He gloomily reviews the "infidelity and apostasy" resulting from the study of the ideas of Locke, Tindal, Bolingbroke, Mandeville, Shaftesbury, and Collins. That Newtonianism and even deism made progress at Yale is the tenor of Johnson's backward glance. About 1716 Samuel Clarke's edition of Rohault was introduced at Yale: Clarke's Rohault[i-41] was an attack upon this standard summary of Cartesianism. Ezra Stiles was not certain that Clarke was honest in heaping up notes "not so much to illustrate Rohault as to make him the Vehicle of conveying the peculiarities of the sublimer Newtonian Philosophy."[i-42] This work was used until 1743 when 'sGravesande's _Natural Philosophy_ was wisely substituted. Rector Thomas Clap used Wollaston's _Religion of Nature Delineated_ as a favorite text. That there was no dearth of advanced natural science and philosophy, even suggestive of deism, is fairly evident.