toothache, or something of that kind) at different druggists, and put together in this larger bottle, which had originally been used for something else. The bottle had been distinguished by a label—the usual white label affixed by the druggist, with directions as to taking the medicine—and this label had been scraped off; all except a small piece at the bottom edge by the right hand side, whereon might be just distinguished the greater part of the letters N, E. The piece of glass that had lain a little way apart from the bottle was not a part of it, as a casual observer might have supposed. It was a fragment of a concave lens, with a channel ground in the edge.
III
At ten precisely next morning, as usual, Mr. Ludwig Hamer mounted the stairs of the house in Hatton Garden, wherein he rented half a room as office. He was a tall, fair man, wearing thick convex pince-nez. He spoke English like a native, and, indeed, he called himself an Englishman, though there were those who doubted the Briticism of his name. Scarce had he entered his office when Dorrington followed him.
