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 - Ridley, Mark (Printed by Nicholas Okes, 1613)
In this state there are no errata on X3r. - Reproduction of the original in the Harvard University. Library. - STC (2nd ed.), 21045. - The title page is engraved