It is necessary, of course, to understand that Mr. Lowell uses the word here in its broad signification. He means more than the simple pleasure of smooth and sugary things. He means the delight of tragedy as well as of comedy; of "King Lear" and "Othello" as well as of "Midsummer Night's Dream;" but he does not mean the nerve-torture of "Ghosts" or the mental nausea of "L'Assommoir." By delight he means that persuasion which is an essential quality of all genuine art. The writer who makes his readers shrink and quiver may produce a transient sensation. His notoriety is noisily proclaimed by the trumpets of to-day; but the brazen voice of to-morrow will as lustily roar other fleeting successes, and all alike be forgotten in a night. I insisted in the first of these talks upon the principle that good art is "human and wholesome and sane." We need to keep these characteristics constantly in mind; and to make them practical tests of the literature upon which we feed our minds and our imaginations. We are greatly in need of some sort of an artistic quarantine. Literature should not be the carrier of mental or emotional contagion. A work which swarms with mental and moral microbes should be as ruthlessly disinfected by fire as if it were a garment contaminated with the germs of fever or cholera. It is manifestly impossible that this shall be done, however, in the present state of society; and it follows that each reader must be his own health-board in the choice of books. The practical question which instantly arises is how one is to know good books from bad until one has read them. How to distinguish between what is worthy of attention and what is ephemeral trash has perplexed many a sincere and earnest student. This is a duty which should devolve largely upon trained critics, but unhappily criticism is not to-day in a condition which makes it reliable or practically of very great assistance where recent publications are concerned. The reader is left to his own judgment in choosing among writings hot from the press. Fortunately the task of discriminating is not impossible. It is even far less difficult than it at first appears. The reader is seldom without a pretty clear idea of the character of notorious books before he touches them. Where the multitude of publications is so great, the very means of advertising which are necessary to bring them into notice show what they are. Even should a man make it a rule to read nothing until he has a definite estimate of its merit, he will find in the end that he has lost little. For any purposes of the cultivation of the mind or the imagination the book which is good to read to-day is good to read to-morrow, so that there is not the haste about reading a real book that there is in getting through the morning paper, which becomes obsolete by noon. When one considers, too, how small a portion of the volumes published it is possible to have time for, and how important it is to