The nineteen propositions here announced contain a brief but succinct view of the progress of Freemasonry from its origin in the early ages of the world, simply as a system of religious philosophy, through all the modifications to which it was submitted in the Jewish and Gentile races, until at length it was developed in its present perfected form. During all this time it preserved unchangeably certain features that may hence be considered as its specific characteristics, by which it has always been distinguished from every other contemporaneous association, however such association may have simulated it in outward form. These characteristics are, first, the doctrines which it has constantly taught, namely, that of the unity of God and that of the immortality of the soul; and, secondly, the manner in which these doctrines have been taught, namely, by symbols and allegories. Taking these characteristics as the exponents of what Freemasonry is, we cannot help arriving at the conclusion that the speculative Masonry of the present day exhibits abundant evidence of the identity of its origin with the spurious Freemasonry of the ante-Solomonic period, both systems coming from the same pure source, but the one always preserving, and the other continually corrupting, the purity of the common fountain. This is also the necessary conclusion as a corollary from the propositions advanced in this essay. There is also abundant evidence in the history, of which these propositions are but a meagre outline, that a manifest influence was exerted on the pure or primitive Freemasonry of the Noachites by the Tyrian branch of the spurious system, in the symbols, myths, and legends which the former received from the latter, but which it so modified and interpreted as to make them consistent with its own religious system. One thing, at least, is incapable of refutation; and that is, that we are indebted to the Tyrian Masons for the introduction of the symbol of Hiram Abif. The idea of the symbol, although modified by the Jewish Masons, is not Jewish in its inception. It was evidently borrowed from the pagan mysteries, where Bacchus, Adonis, Proserpine, and a host of other apotheosized beings play the same rôle that Hiram does in the Masonic mysteries. And lastly, we find in the technical terms of Masonry, in its working tools, in the names of its grades, and in a large majority of its symbols, ample testimony of the strong infusion into its religious philosophy of the elements of an operative art. And history again explains this fact by referring to the connection of the institution with the Dionysiac Fraternity of Artificers, who were engaged in building the temple of Solomon, with the Workmen's Colleges of Numa, and with the Travelling Freemasons of the middle ages, who constructed all the great buildings of that period.