Every low district of London has its theatre, or at least an humble substitute for one, called in vulgar parlance a “gaff.” A gaff is a place in which, according to the strict interpretation of the term, stage plays may not be represented. The actors of a drama may not correspond in colloquy, only in pantomime, but the pieces brought out at the “gaff” are seldom of an intricate character, and the not over-fastidious auditory are well content with an exhibition of dumb show and gesture, that even the dullest comprehension may understand. The prices of admission to these modest temples of the tragic muse, are judiciously regulated to the means of the neighbourhood, and range from a penny to threepence. There is no “half-price for children,” and for the simple reason that such an arrangement would reduce the takings exactly fifty per cent. They are _all_ children who support the gaff. Costermonger boys and girls, from eight or nine to fourteen years old, and errand boys and girls employed at factories. As before mentioned, every district has its own “gaff.” There is one near Peter Street, Westminster; a second in the New Cut, at Lambeth; a third in Whitecross Street; a fourth, fifth, and sixth between Whitechapel Church and Ratcliff Highway. It may, without fear of contradiction, be asserted, that within a circuit of five miles of St. Paul’s, at least twenty of these dangerous dens of amusement might be enumerated. At best of times they are dangerous. The best of times being when current topics of a highly sensational character are lacking, and the enterprising manager is compelled to fall back on some comparatively harmless stock piece. But the “gaff” proprietor has an eye to business, and is a man unlikely to allow what he regards as his chances to slip by him. He at once perceives a chance in the modern mania that pervades the juvenile population for a class of literature commonly known as “highly sensational.” He has no literature to vend, but he does not despair on that account. He is aware that not one in five of the youth who honour his establishment with their patronage can read. If he, the worthy gaff proprietor, had any doubts on the subject, he might settle them any day by listening at his door while an admiring crowd of “regular customers” flocking thereto speculated on the pleasures of the night as foretold in glowing colours on the immense placards that adorn the exterior of his little theatre. They can understand the pictures well enough, but the descriptive legends beneath them are mysteries to which few possess the key. If these few are maliciously reticent, the despair of the benighted ones is painful to witness, as with puckered mouths and knitted brows they essay to decipher the strange straight and crooked characters, and earnestly consult with each other as to when and where they had seen the like. Failing in this, the gaff proprietor may have heard them exclaim