Natura prodigiorum, or, A discourse touching the nature of prodigies : together with the kindes, causes, and effects of comets (or blazing stars) eclipses and earthquakes, remarkable since the birth of Christ to this present year 1665 : with an appendix touching the imposturism of the commonly-received doctrine of prophecies, spirits, images, sigils, lamens, the christal &c. and the propugners of such opinions