Jean Chandler

The Art & Artifices of De Sphaera Mundi

The Art & Artifices of De Sphaera Mundi

A very popular early 13th Century treatise on astronomy and astrology, by Johannes de Sacrobosco. Very popular in medieval Universities where it was used for teaching the fundamentals of astronomy. Based largely on Ptolemy’s Almagast, it incorporated more detailed astronomical and astrological ideas derived from Al Kindi, AL Jabir, Avicenna and other Muslim auctores. The …

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Martialis Grappling

Grappling With Grappling: How to Implement Grappling in a Tabletop RPG

Since the earliest days of table top role playing games, grappling or unarmed combat more generally has always been a somewhat tricky part of fighting. Some systems were wildly complex involving percentile dice and many tables to consult, many were ignored or discarded. Codex Martialis seeks to make this ‘up close and personal’ part of …

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