Discussing prose written by poets, Joseph Brodsky has remarked, "the tradition of dividing literature into poetry and prose dates from the beginnings of prose, since it was only in prose that such a distinction could be made." This insight is worth bearing in mind when considering the various prose works of the poet William Wordsworth. For Wordsworth poetic composition was a primary mode of expression; prose was secondary. Wordsworth seems to have written prose mostly in order to find a structure for his poetic beliefs and political enthusiasms. Over the course of a prolific poetic career, in fact, Wordsworth produced little prose, though he did compose two works of lasting general interest, one on poetics--"Preface to Lyrical Ballads"--and the other on the landscape of his native region--his tourist handbook, A Guide through the District of the Lakes, which retains more than a local interest as geographical...