FERGUS HUME, Author of "THE MYSTERY OF A HANSOM CAB," "THE PICCADILLY PUZZLE," "MADAME MIDAS," "MISS MEPHISTOPHELES," "THE MAN WITH A SECRET," ETC. 'Tis ill to tamper with the unseen world Lest those habitate the sphere's invisible Should make us sport for their ironic jeers, And by some trick beyond the thought of man Entangle all the issues of our lives. IN ONE VOLUME LONDON: F. V. WHITE & CO. 31, SOUTHAMPTON STREET, STRAND. 1890. LONDON: