Synopsis In an experimental subject like Astrology there is always something fresh to be said, and much that needs to be told anew in the light of a more catholic experience than that enjoyed by astrological authors of the seventeenth and eighteenth centuries. The discovery of the planet Uranus on the 13th of March, 1781, and of Neptune of the 20th of September, 1846, has enlarged the field of our researches, and put us in touch with causative influences hitherto unrecognized by astrologers. Consequently, exceptional fullness of treatment has been given to points hitherto omitted, or barely mentioned, by former writers; and much has been added to what is already known in regard to the natures and dominions of the planets. The present exposition of the predictive art will probably find more favour with students of Astrology than with the general public, though, if the choice of a guide to the celestial science is of any importance, the present Manual may recommend itself to the lay reader, as containing the fullest possible information under the several heads of our subject, and being, at the same time, devoid of those abstruse calculations and technicalities which have beclouded some of the most learned and brilliant expositions. The treatment of that portion of our subject which deals with prenatal influences, the intra-uterine period, and the law of sex, has the merit of originality, and, it is to be hoped, the virtue of truth also.