When Tabywana pulls his peace pipe out from inside his robes, it's only a foot or so long. But in the next shot it's clearly a different pipe over 2 feet long.
When he is in his hotel room in New York, Captain Wynnegate looks out of his window. This is followed by a cut to an obvious still photograph of the Broadway/Times Square district by night, meant to represent the view from the Captain's window.
Early in the film, when Captain James Wynnegate (played by Dustin Farnum) is on board the sailing ship, he writes a note asking that a "check" enclosed with the note be cashed for him. As Captain Farnum is an Englishman, he would have spelled the word as "cheque", the standard British spelling. (Moreover, the handwriting in the note is scarcely that of an educated British military officer: the lines of writing are crooked and the letters are crudely formed.)