Jamie walks past a standing Geillis twice when traversing the hall to the oath taking; once without Dougal in the shot and once with.
When Claire leaves her surgery after giving Laoghaire the potion she is only wearing her dress but in the next scene she has a cloak over her dress.
Claire narrowly avoids getting gouged by Wild Boars whilst surrounded by Rhododendrum bushes. Rhododendrums weren't introduced to Scotland until the Victorian era.