December he wrote over 2000 lines.

Dorothy and Mary Wordsworth transcribed the earlier books more than
once, and a copy of some of them was given to Coleridge to take with him
to Malta.

It is certain that the remaining books of 'The Prelude' were all written
in the spring and early summer of 1805; the seventh, eighth, ninth,
tenth, eleventh, and part of the twelfth being finished about the middle
of April; the last 300 lines of book twelfth in the last week of April;
and the two remaining books--the thirteenth and fourteenth--before the
20th of May. The following extracts from letters of Wordsworth to Sir
George Beaumont make this clear, and also cast light on matters much
more important than the mere dates of composition.

GRASMERE, Dec. 25, 1804.

"My dear Sir George,--You will be pleased to hear that I have been
advancing with my work: I have written upwards of 2000 verses during
the last ten weeks. I do not know if you are exactly acquainted with
the plan of my poetical labour: It is twofold; first, a Poem, to be
called 'The Recluse;' in which it will be my object to express in
verse my most interesting feelings concerning man, nature, and
society; and next, a poem (in which I am at present chiefly engaged)
on _my earlier life, or the growth of my own mind,_ taken up upon a
large scale. This latter work I expect to have finished before the
month of May; and then I purpose to fall with all my might on the
former, which is the chief object upon which my thoughts have been
fixed these many years. Of this poem, that of 'The Pedlar,' which
Coleridge read to you, is part; and I may have written of it
altogether about 2000 lines. It will consist, I hope, of about ten or
twelve thousand."

GRASMERE, May 1, 1805.

"Unable to proceed with this work, [B] I turned my thoughts again to
the 'Poem on my own Life', and you will be glad to hear that I have
added 300 lines to it in the course of last week. Two books more will
conclude it. It will not be much less than 9000 lines,--not hundred
but thousand lines long,--an alarming length! and a thing
unprecedented in literary history that a man should talk so much about
himself. It is not self-conceit, as you will know well, that has
induced me to do this, but real humility. I began the work because I
was _unprepared_ to treat _any more arduous subject_, and _diffident
of my own powers_. Here, at least, I hoped that to a