The most important of the new works of this period was, as has been said, the _Biographia Literaria_, or, to give it its other title, _Biographical Sketches of my Literary Life and Opinions_. Its interest, however, is wholly critical and illustrative; as a narrative it would be found extremely disappointing and probably irritating by the average reader. With the exception of one or two incidental disclosures, but little biographical information is to be derived from it which is not equally accessible from sources independent of the author; and the almost complete want of sequence and arrangement renders it a very inconvenient work of reference even for these few biographical details. Its main value is to be found in the contents of seven chapters, from the fourteenth to the twentieth; but it is not going too far to say that, in respect of these, it is literally priceless. No such analysis of the principles of poetry--no such exact discrimination of what was sound in the modern "return-to-nature" movement from what was false--has ever been accomplished by any other critic, or with such admirable completeness by this consummate critic at any other time. Undoubtedly it is not of the light order of reading; none, or very little, of Coleridge's prose is. The whole of chapter xv., for instance, in which the specific elements of "poetic power" are "distinguished from general talent determined to poetic composition by accidental motives," requires a close and sustained effort of the attention, but those who bestow it will find it amply re-paid. I know of no dissertation conceived and carried out in terms of the abstract which in the result so triumphantly justifies itself upon application to concrete cases, As regards the question of poetic expression, and the laws by which its true form is determined, Coleridge's analysis is, it seems to me, final. I cannot, at least, after the most careful reflection upon it, conceive it as being other than the absolutely last word on the subject. Reasoning and illustration are alike so convincing that the reader, like the contentious student who listened unwillingly to his professor's demonstration of the first proposition of Euclid, is compelled to confess that "he has nothing to reply." To the judicious admirer of Wordsworth, to every one who, while recognising Wordsworth's inestimable services to English literature as the leader of the naturalist reaction in poetry, has yet been vaguely conscious of the defect in his poetic theory, and very keenly conscious of the vices of his poetic practice,--to all such persons it must be a profound relief and satisfaction to be guided as unerringly as Coleridge guides them to the "parting of the ways" of truth and falsity in Wordsworth's doctrines, and to be enabled to perceive that nothing which has offended him in that poet's thought and diction has any real connection with whatever in the poet's principles has commanded his assent. There is no one who has ever felt uneasy under the blasphemies of the enemy but must entertain deep gratitude for so complete a discharge as Coleridge has procured him from the task of defending such lines as