Astrological images, so 15th-century astrologer Giorgio Anselmi notes, are not limited to the narrow band of zodiacal stars. In A Similitude of Nature, translator Brian Johnson reintroduces us to the layer of magical meaning hidden in the eighth celestial sphere. Anselmi unpacks new layers of magic possible when we step beyond the Behenians and into a larger scope of environmental awareness of the celestial firmament. Revelore presents this work alongside the original Latin for those enterprising scholar mages who seek to work with the original treatise by Anselmi. This text is an essential addition to the reference shelf of any practicing celestial magician.