Twice as we ascended Holmes whipped his lens out of his pocket and carefully examined marks which appeared to me to be mere shapeless smudges of dust upon the cocoa-nut matting which served as a stair-carpet.
Tweemalen haalde Holmes op de trap zijn lens uit zijn zak en onderzocht nauwkeurig enkele vlekken, die mij niet anders dan stof toeleken op den kokosnoten traplooper.