Describir: Scurvy: How a Surgeon, a Mariner, and a Gentleman Solved the Greatest Medical Mystery of the Age of Sail: by Stephen R. Bown. New York: St Martin's Griffin, an Imprint of Macmillan Publishers, 2021. 254 pp., b/w illustrations, notes, index. $21.99 (PB) ISBN 978-0-312-31392-0