De cometis libelli tres : I, Astronomicus, theoremata continens de motu cometarum, ubi demonstratio apparentiarum & altitudinis cometarum qui annis 1607 & 1618, conspecti sunt nova et paradoxos. II, Physicus, continens physiologium cometarum novam et paradoxos. III, Astrologicus, de significationibus cometarum annorum 1607 & 1618
A short treatise of magneticall bodies and motions. By Marke Ridley Dr in phisicke and philosophie latly physition to the Emperour of Russia, and one of ye eight principals of elects of the Colledge of Physitions in London.