His earliest collection of these exquisite little poems was not issued under his own name, but under that of Philip Rosetter the musician, who wrote the music for half the book; the other half being of Campion's own composition. This, the first of the delightful set of old music-books which are the only source we have to draw upon for his lyric poems, was published in 1601. There is no doubt that for many years previous to this, Campion had been in the habit of writing both the words and music of such songs for the private delectation of his friends and himself. Some of his very finest lyrics, as memorable as anything he has given us, appear in this first volume of 1601. The second collection of Campion's songs was published, this time under his own name, probably in 1613. It is entitled 'Two Books of Airs'; the first, 'Divine and Moral Songs,' which include some of the finest examples of their kind in all English literature; the second book, 'Light Conceits of Lovers,' is very well described by its title, containing many sweetest love-songs. We have not yet exhausted the list of Campion's music-books. In 1617 two more, 'The Third & Fourth Books of Airs,' were published in another small folio; and these again afford songs fine enough for any anthology. Meanwhile we have passed by all his Masques, which are among the prettiest of their kind, and as full of lyrical moments as of picturesque effects. The first was performed at Whitehall for the marriage of "my Lord Hayes" (Sir James Hay), on Twelfth Night, 1606-7. Three more were written by Campion in 1613; and in the same year he published his 'Songs of Mourning,' prompted by the untimely death of the promising young Prince Henry, which had taken place in November, 1612. These songs, which do not show Campion at his best, were set to music by Copario (alias John Cooper). This completes the list of Campion's poetry; but besides his actual practice in the arts of poetry and music, he wrote on the theory of both. His interesting 'Observations in the Art of English Poesie' (1602) resolves itself into a naive attack upon the use of rhyme in poetry, which comes paradoxically enough from one who was himself so exquisite a rhymer, and which called forth a very convincing reply in Daniel's 'Defence of Rhyme.' The 'Observations' contain some very taking examples of what may be done in the lyric form, without rhyme. Campion's musical pamphlet is less generally interesting, since counterpoint, on which he offered some practical rules, and the theory of music, have traveled so far since he wrote. It remains only to add that Campion remained in the limbo of forgotten poets from his own day until ours, when Professor Arber and Mr. A. H. Bullen in their different anthologies and editions rescued him for us. Mr. Bullen's privately printed volume of his works appeared in 1889. The present writer has more recently (1896) edited a very full selection of the lyrics in the 'Lyric Poets' series. Campion's fame,