Saunders "practised astrology and cheiromancy during the golden age of the pseudo-sciences in England." The DNB characterizes this work as "a systematic exposition of astrological therapeutics, based largely upon examination of the urine, sputa, etc., by horoscopical methods. The author is held up as a ‘counterquack’ in commendatory verses by Henry Coley [q. v.], the mathematician, and others."