In a drear-nighted December, Too happy, happy tree, Thy branches ne'er remember Their green felicity: The north cannot undo them, With a sleety whistle through them; Nor frozen thawings glue them From budding at the prime.
In a drear-nighted December, Too happy, happy brook, Thy bubblings ne'er remember Apollo's summer look; But with a sweet forgetting, They stay their crystal fretting, Never, never petting About the frozen time.
Ah! would 'twere so with many A gentle girl and boy! But were there ever any Writh'd not at passed joy? To know the change and feel it, When there is none to heal it, Nor numbed sense to steel it, Was never said in rhyme.
And did those feet in ancient time Walk upon Englands mountains green: And was the holy Lamb of God, On Englands pleasant pastures seen!
And did the Countenance Divine, Shine forth upon our clouded hills? And was Jerusalem builded here, Among these dark Satanic Mills?
Bring me my Bow of burning gold: Bring me my arrows of desire: Bring me my Spear: O clouds unfold! Bring me my Chariot of fire!
I will not cease from Mental Fight, Nor shall my sword sleep in my hand: Till we have built Jerusalem, In Englands green & pleasant Land.
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Track 1
How this picture is made
What a fractal is
A fractal is a shape that keeps its pattern when you look closer. Coastlines, trees, shells, and weather do this. The large form and the small form are the same kind of thing. A poem can be drawn that way. The shape of the whole comes from the shape of the lines.
Primunia is the name for the source of that order: the pattern under the pattern, already there in a tree, a shell, and a verse.
How the boundary is drawn
The number under the picture is the poem constant. It is read from the build of the lines: their length, how uneven they are, the size of the stanzas, the share of vowels, and the way the lines end. A new word moves the number when it changes that build. The same poem always gives the same number.
Drawn on its own, that number sits in a quiet part of the plane, and most poems would look like the same soft disk. So the number is carried outward along its own direction until it meets the edge of the Mandelbrot set, where the shape turns sharp. The picture is the Julia set of that meeting place.
Each point on the canvas is folded again and again by one small rule. Points that stay near the rule form the dark interior. Points that rush away become the coloured bands. The hue comes from the poem constant, and the brightest bands turn toward gold. Change the length of a line, the stanza, or the vowel share, and both the number and the picture move.
What the branching signifies
Branching draws the poem as a tree. Each turn follows a line, and every smaller branch repeats that pattern. A longer line reaches farther. The letters at the start of a line bend the next turn. A higher share of vowels opens the branches wider.
The trunk takes its colour from the poem constant and warms toward gold at the tips. When the poem has more than one stanza, gold forks leave the trunk. Each fork is a stanza beyond the first, up to three. The tree divides where the poem divides. One stanza remains a single trunk.