It is a significant fact that whenever and wherever the drama has flourished most abundantly and most luxuriantly, we are certain to find a tendency to collaboration, to the partnership of two authors in the composition of one play. In England in the spacious days of good Queen Bess, there is not only the famous association of Beaumont and Fletcher, but also a host of other more or less temporary combinations, Fletcher with Shakspere and Massinger, Dekker with Ben Jonson and with Middleton. In Spain Lope de Vega joined forces with Montalvan and with others. In France in the seventeenth century Molière, once at least called to his aid Corneille and Quinault; and in France again in the nineteenth century we find Augier working with Sandeau and with Foussier, Scribe working with Legouvé, and with a score of others, while Dumas the elder was encompassed by a cloud of collaborators, and Dumas the younger was willing on more than one occasion to join various writers in the plays which he included in the separate volumes of his works, called by him the 'Théâtre des Autres.' Then also in France there was the long-continued alliance of Meilhac and Halévy, to which we owe 'Froufrou' and the 'Grand Duchess of Gérolstein'; and there was also the almost equally interesting association of MM. Caillavet and de Flers. Sardou had one ally in the composition of 'Divorçons,' and another in the composition of 'Madame Sans Gêne.' In Great Britain in recent years we have seen Sir James Barrie and Sir Arthur Pinero unite in writing a book for music; Mr. Bennett and Mr. Knoblauch unite in writing 'Milestones'; Mr. Granville Barker and Mr. Laurence Housman unite in writing 'Prunella.' And in the United States there was a score of years ago the steady collaboration of Mr. Belasco with the late H. C. De Mille, to which we owe the 'Charity Ball' and the 'Wife'; and more recently Mr. Belasco also has collaborated with Mr. John Luther Long in writing 'Madame Butterfly,' and the 'Darling of the Gods.' Mr. Augustus Thomas was once the partner of Mr. Clay Greene; Mr. Bronson Howard composed one of his latest plays, 'Peter Stuyvesant, Governor of New Amsterdam,' in association with another American man of letters; and Mr. Booth Tarkington and Mr. Harry Leon Wilson were the co-authors of the 'Man from Home' and of half a dozen other pieces.