Marc E. Jones in his initial outing, How to Learn Astrology, writes in the preface,
ASTROLOGY, as here presented, is the form of practice on which the majority of astrologers and their students agree, both in America and Europe. Its essence is the use of a horoscope made for the precise place, and for the exact minute and hour as well as the day, month and year of birth. It accepts the methods in calculation and interpretation which have their principal roots in Claudius Ptolemy (writer of th2nd century A.D.), Didacus Placidus de Titus ( father of the Placidian House System 1647-1657), William Lilly (1602-1681), and Lilly’s pupil, John Gadbury (d. 1691). No adequate history of astrology exists, as most of the accounts are little more than lists of distinguished devotees in the past.
The most serviceable historical sketch is an informative article on “Astrology” by Charles Singer of London in the Encyclopaedia of the Social Sciences, Volume II, Macmillan Publishing Company, New York, 1931.
We are very happy to provide the aforementioned entry for general interest. Click on the image below to read the two pages in Flickr in a larger and more readable format.