Herford's The Age of Wordsworth.
Brandes's Naturalism in England (Vol. IV. of Main Currents in
Nineteenth Century Literature.)
The Revolution in English Poetry and Fiction (Chap. XXII. of Vol. X. of Cambridge Modern History.)
Hancock's The French Revolution and the English Poets.
Scudder's Life of the Spirit in the Modern English Poets.
Symons's The Romantic Movement in English Poetry.
Reynolds's The Treatment of Nature in English Poetry between Pope and
Wordsworth.
Mackie's Nature Knowledge in Modern Poetry.
Brookes's Studies in Poetry (Blake, Scott, Shelley, Keats).
Symons's William Blake.