Sentence:  “[…] Captain Markam had been found lying half-<WSD>insensible</WSD>, gagged and bound, on the floor of the sitting-room, his hands and feet tightly pinioned, and a woollen comforter wound closely round his mouth and neck ; whilst Mrs. Markham's jewel-case, containing valuable jewellery and the secret plans of Port Arthur, had disappeared. […]” 
Meaning of the word marked with <WSD> tags:  Incapable or deprived of physical sensation.