John Twysden

1607 – 1688

• The use of the general planisphere, called the analemma, in the resolution of some of the chief and most useful problems of astronomy
• A Disquisition Touching the Sibylls And the Sibylline VVritings. In Which Their Number, Antiquity, and by what Spirit they were Inspired, are succinctly discussed. The Objections made by Opsopaeus, Isaac Casaubon, David Blondel, and others, are examined;
• A disquisition touching the sibylls and the sibylline writings
• Elliptical or azimuthal horologiography
• Medicina veterum vindicata, or, An answer to a book, entitled Medela medicinæ
• The whole art of reflex dialling