More than half the volume is taken up with epistles and meditative pieces (Drayton would have called them Elegies and Ben Jonson Epigrams) in the regular five-stressed or decasyllabic couplet. The earliest of these is the epistle to Felton Mathew from which I have already given a quotation. The form of the verse in this case is modelled pretty closely on Browne's _Britannia's Pastorals_. Keats, as has been said, was already familiar with the work of this amiable Spenserian allegorist, so thin and tedious in the allegorical part of his work proper, in romantic invention so poorly inspired, so admirable, genuine, and vivacious on the other hand in his scenes and similitudes from real west-country life and in notes of patriotism both local and national. By the following motto chosen from Browne's work Keats seems to put the group of _Epistles_ in his volume under that poet's particular patronage:-- Among the rest a shepheard (though but young Yet hartned to his pipe) with all the skill His few yeeres could, began to fit his quill. But before coming to questions of the special influences which successively shaped Keats's aims both as to style and versification in poems of this form, I shall ask the reader to pause with me awhile and get freshly and familiarly into his ear and mind, what to special students is well known but to others only vaguely, the story of the chief phases which this most characteristic of English measures had gone through until the time when Keats tried to handle it in a spirit more or less revolutionary. Some of the examples I shall quote by way of illustration are passages which we know to have been specially familiar to Keats and to which we shall have occasion to recur. Let us first consider Chaucer's use, as illustrated in a part of the prayer of Emilia to Diana in the _Knightes Tale_:--