The word appears 2 times.
These amazing books take place mostly at sea and involve the workings of the crew, battles, and society of the early 1800's. When I first read these I thought they were written at the time - the level of detail is stunning. Racism, however, is pretty much left out.
... one member of the crew is having a problem with another who happens to be a Moslem...
'I cannot interfere with the running of the ship,' said Stephen.
'Then H.E. will have to have a word with Aubrey himself,' said Atkins. 'It is intolerable. Every day this nigger finds some new way of provoking me. If he don't take care, I shall provoke him, I can tell you.'
'Do you mean you will fight him?' asked Stephen. 'That is a course no one with your welfare at heart could advise.'
'Thank you, thank you, Dr. Matruin,' cried Atkins, grasping his hand. He was extremely sensitive to even the mos fallacious of affection, poor man. 'But that is not what I meant. Oh no. A man of my family dos not fight with a half-caste nigger clerk, not eve a Christian. After all, un gentilhommme est toujours gentilhomme.'