The Entomological Tales of Augustus T. Percival, Book Three: Petronella Saves at Least One

Middle grade, historical fantasy.

When Petronella Arbuthnot and her insectivore guardian, Augustus T. Percival, visit Scotland, they are nearly overwhelmed by bicycling enthusiasts in one of the many races that preceded the first Tour de France. One of the enthusiasts is Baron Merthrop, who has learned of Uncle Augustus’s obsession with insects and the special powers he has gained thereby. The baron will stop at nothing to increase his own athletic prowess and sees Uncle as the means to gaining the secrets to winning.