This chronological method of arrangement, however, has its limits. It is not possible always to adopt it: nor is it invariably 'necessary', even in order to obtain a true view of the growth of Wordsworth's mind. In this--as in so many other things--wisdom lies in the avoidance of extremes; the extreme of rigid fidelity to the order of time on the one hand, and the extreme of an irrational departure from it on the other. While an effort has been made to discover the exact order of the composition of the poems--and this is shown, not only in the Chronological Table, but at the beginning of each separate poem--it has been considered expedient to depart from that order in printing some of the poems. In certain cases a poem was begun and laid aside, and again resumed at intervals; and it is difficult to know to what year the larger part of it should be assigned. When we know the date at which a poem was commenced, and that it was finished "long afterwards," but have no clue as to the year, it is assigned to the year in which it was begun. For example, the 'Address to Kilchurn Castle' was begun in 1803, but only the first three lines were written then. Wordsworth tells us that "the rest was added many years after," but when we know not; and the poem was not published till 1827. In such a case, it is placed in this edition as if it belonged chronologically to 1803, and retains its place in the series of Poems which memorialise the Tour in Scotland of that year. On a similar principle, 'The Highland Girl' is placed in the same series; although Dorothy Wordsworth tells us, in her Journal of the Tour, that it was composed "not long after our return from Scotland"; and 'Glen Almain'--although written afterwards at Rydal--retains its published place in the memorial group. Again the 'Departure from the Vale of Grasmere, August 1803', is prefixed to the same series; although it was not written till 1811, and first published in 1827. To give symmetry to such a Series, it is necessary to depart from the exact chronological order--the departure being duly indicated. On the same principle I have followed the 'Address to the Scholars of the Village School of----', by its natural sequel--'By the Side of the Grave some Years after', the date of the composition of which is unknown: and the 'Epistle to Sir George Beaumont' (1811) is followed by the later Lines, to which Wordsworth gave the most prosaic title--he was often infelicitous in his titles--'Upon perusing the foregoing Epistle thirty years after its composition'. A like remark applies to the poem 'Beggars', which is followed by its own 'Sequel', although the order of date is disturbed; while all the "Epitaphs," translated from Chiabrera, are printed together.