Read it through once

“I do not know that there is anything else for me to explain. I was determined to preserve my disguise as long as possible, and hence my preference for a dirty face. Knowing that my wife would be terribly anxious, I slipped off my ring and confided it to the Lascar at a moment when no constable was watching me, together with a hurried scrawl, telling her that she had no cause to fear.”