Jack rode off to the side and waited for the column to pass him by. The stragglers were tailed by a horseman who, as Jack watched, patiently uncoiled his nerf du boeuf, whirled it round his head a time or two (to make a scary noise and build up speed), and then snapped it through the air to bite a chunk out of a slave's ear. Extremely pleased with his own prowess, he then said something not very pleasant about the R.P.R. Which made everything clear to Jack, for R.P.R. stood for Religion Pretendue Réformée , which was a contemptuous way of referring to Huguenots. Huguenots tended to be prosperous merchants and artisans, and so naturally if you gave them the galley slave treatment they would suffer much worse than a Vagabond.