For a novel that focuses on a physician during an incredibly bloody war, The Swift and the Harrier by Minette Walters is generally not too explicit in describing the treatment of wounds. The passage below is an exception; when main character Jayne's brother suffers a pike wound to the thigh that soon becomes infected, her mentor suggests what we now call larval therapy: the introduction of maggots to gangrenous wounds. While certainly gross enough to disgust most modern readers — and seemingly very far removed from our own times — larval therapy, which has existed in some form or another since antiquity (and still does), is a fascinating phenomenon and indicative in the above passage of a change sweeping European medicine in the 16th and 17th centuries.

"The sack contained a glass bell jar with a writhing mass of maggots in its base. Richard told Jayne he began experimenting with the creatures after reading a report from a French surgeon in the previous century who ...