the melting down of metals—gold or silver. It was in this same room also that the table stood, in the drawers of which were found papers, letters and formulae—things giving more than a hint of the use to which Mayes had put his friendship with Mr. Jacob Mason, for of every possible manner and detail in which science—more particularly the science of chemistry—could aid in the commission of crime, there were notes in these same drawers.
But most of these things were observed in detail later. The thing that set us once more on the trail of Mayes, that very night and that very hour, was found in the isolated office facing the street. It was a cheque-book, quite full of unused cheques.
"This cheque-book," said Hewitt to Inspector Plummer and myself, "was in the drawer below that in which we discovered the Admiralty code. The Eastern Consolidated is the bank, as you see—Upper Holloway branch. Now we must follow this at once, before waiting to search any further. There may be something more important as a clue, or there may not, but at any rate, while we are looking for it we are losing time. This may bring us to him at once."
"You mean that he may have some address in
