Nothing that Joseph Conrad writes is negligible; he is one of few living writers whom we must have complete to the last, or the latest, published word. Readers who care only for the yarn-spinner will not find much in his volume of essays, "Notes on Life and Letters," but even they will find something. And for those to whom Conrad is more than a story teller, an incomparable magician, these small bits from his laboratory will have much of the charm of the larger pieces, if only the reminiscent charm that brings any book of his, the least read or read longest ago, swiftly to the surface of memory. If a mere landlubber may hazard the similitude, the captain will always show his qualities whether he is on the bridge of a liner or in a rowboat. The essays on books are unpretentious notes--eight pages on Henry James, seven on Maupassant, twelve on Anatole France, short excursions in criticism made between the longer voyages to the islands of the blessed. Like most criticism written by men of genius, these papers are interesting for what they say about another man of genius and also for what they say about the critic. One of the most satisfactory essays in what it reveals of Conrad is least satisfactory as objective criticism--the one about Marryat and Cooper, in which there is a declaration of descent in terms of surrender. To be sure, since the elder men are seamen and writers of the sea, Conrad's delight in them is understandable and not to be denied. But there are some things that must be denied even by a critic who gets seasick a mile off shore. One is Conrad's reiterated judgment that the greatness of Marryat "is undeniable." If Marryat is great, then so is Oliver Optic. And when Conrad speaks of the "sureness and felicity of effect" of the prose of Cooper--Cooper, whose style grates on the ear and who drags us by the sheer power of his story through his verbal infelicities--then I jump overboard and leave these literary sailors to fight it out.