Like an opera, in which music and poetry and drama melt into one another to produce what amounts to a new kind of art, with a purpose and an idiom of its own; like a song, in which music and poetry are interlocked, and become one harmony, the historical novel is a fusion. It is one of the arts that are born of the marriage of different arts. A historical event is “put to fiction” as a poem is put to music; it is turned into story as words are turned into song; it is put into a context of narrative which is like the result that is obtained when words are printed between the staves of a vocal score. And just as a composer in choosing a poem to set to music, accepts certain limitations, volunteers a certain allegiance, and must in some way be loyal to the poetry he has selected, so the historical novelist owes a certain loyalty to the history of which he treats. But because this is a marriage of the arts it is not a complete loyalty, and just as poets complain because musicians modify the original rhythms of their poems and the lilt of the words, so historians cry out because a Scott tampers with history. For all arts that combine different forms of art are beset with divided loyalties like these, and with causes of disagreement and annoyance. The very appeal that they should make is a thing to be discovered, a matter of controversy. And in the study of them, every issue is a complicated one. And, lastly, it may be said that a given song may be good poetry if read in an armchair; the music of a song may be good in itself if played over on some instrument; and yet the song may be a poor thing when sung by anybody, if the two do not hang together, if the marriage is not a harmony. In the same way, a historical novel may be a good book but not a good historical novel. It may be a just piece of history; or it may be a good story; but it may not be good with the special goodness of a historical novel, it may not combine its two elements in just the way that is needed. It is not exactly that history and fiction should dovetail into one another to produce a coherent whole; it is not simply that the story of the Popish Plot can be rounded off by a piece of invention, or the tragedy of Mary Queen of Scots depicted more fully and with more connectedness by the interspersion of imaginary episodes; but it is rather that in the historical novel history and fiction can enrich and amplify one another, and interpenetrate. They can grow into one another, each making the other more powerful. And they can make a special kind of appeal to the reader. * * * * *