This book is an English translation of Book 21 of the Astrologia Gallica, in which Morin sets forth his method of horoscope interpretation. In the first section of the book he reviews the methods of other astrologers and explains why they are insufficient. In the second section he explains his own method, which is both different from and superior to the traditional methods.
Morin was a physician who became the most renowned of all French astrologers. He was appointed Royal Mathematician to King Louis XIII and was summoned to be present at the birth of the royal heir, the future King Louis...