By collecting these poems[2] from the work of a generation more often named than read, and more often read than profitably studied, Professor Grierson has rendered a service of some importance. Certainly the reader will meet with many poems already preserved in other anthologies, at the same time that he discovers poems such as those of Aurelian Townshend or Lord Herbert of Cherbury here included. But the function of such an anthology as this is neither that of Professor Saintsbury's admirable edition of Caroline poets nor that of the "Oxford Book of English Verse." Mr. Grierson's book is in itself a piece of criticism, and a provocation of criticism; and we think that he was right in including so many poems of Donne, elsewhere (though not in many editions) accessible, as documents in the case of "metaphysical poetry." The phrase has long done duty as a term of abuse, or as the label of a quaint and pleasant taste. The question is to what extent the so-called metaphysicals formed a school (in our own time we should say a "movement"), and how far this so-called school or movement is a digression from the main current. Not only is it extremely difficult to define metaphysical poetry, but difficult to decide what poets practise it and in which of their verses. The poetry of Donne (to whom Marvell and Bishop King are sometimes nearer than any of the other authors) is late Elizabethan, its feeling often very close to that of Chapman. The "courtly" poetry is derivative from Jonson, who borrowed liberally from the Latin; it expires in the next century with the sentiment and witticism of Prior. There is finally the devotional verse of Herbert, Vaughan, and Crashaw (echoed long after by Christina Rossetti and Francis Thompson); Crashaw, sometimes more profound and less sectarian than the others, has a quality which returns through the Elizabethan period to the early Italians. It is difficult to find any precise use of metaphor, simile, or other conceit, which is common to all the poets and at the same time important enough as an element of style to isolate these poets as a group. Donne, and often Cowley, employ a device which is sometimes considered characteristically "metaphysical"; the elaboration (contrasted with the condensation) of a figure of speech to the farthest stage to which ingenuity can carry it. Thus Cowley develops the commonplace comparison of the world to a chess-board through long stanzas ("To Destiny"), and Donne, with more grace, in "A Valediction," the comparison of two lovers to a pair of compasses. But elsewhere we find, instead of the mere explication of the content of a comparison, a development by rapid association of thought which requires considerable agility on the part of the reader.