When preparing for the rescue of Mike, Samuel Stoat places his two revolvers in their holsters close together at the front. Two shots later, the holsters are moved back on opposite hips.
When the captain takes a drink, he takes the bottle cap off and sets it beside the bottle on the right side of the desk and pours his drink. In the next instant the cap is in his left hand as he caps the bottle.
Although the story takes place in the 1880s, Jellon sings "Danny Boy" - which wasn't published until 1913.
Captain Stanley says of Australia "What fresh Hell is this?" The scene takes place in the 1880s, yet the quote is attributed to Dorothy Parker, who would not have been born yet.
Jellon Lamb claims early in the movie that Charles Darwin had claimed in "On the origin of species by means of natural selection" that man shares common ancestors with apes. This claim was not made by Darwin in "On the origin of species", but in "On the descent of man".