Sentence:  (...) I say it is south, for the country is more deserted there." "And I say east," said my patient. "I am for west," remarked the plain-clothes man. (...) "And I am for north," said I (...) "Come," cried the Inspector, laughing, "it's a very pretty diversity of opinion. We have <WSD>boxed the compass</WSD> among us." 
Meaning of the word marked with <WSD> tags:  To know, and be able to recite the 32 points and quarter points of the magnetic compass from North, both clockwise and anticlockwise.