Into the street the Piper stept

From Robert Browning’s The Pied Piper of Hamelin (scroll down a bit if you follow the link).

Into the street the Piper stept,
Smiling first a little smile,
As if he knew what magic slept
In his quiet pipe the while;
Then, like a musical adept,
To blow the pipe his lips he wrinkled,
And green and blue his sharp eyes twinkled,
Like a candle-flame where salt is sprinkled;
And ere three shrill notes the pipe uttered,
You heard as if an army muttered;
And the muttering grew to a grumbling;
And the grumbling grew to a mighty rumbling;
And out of the houses the rats came tumbling.
Great rats, small rats, lean rats, brawny rats,
Brown rats, black rats, grey rats, tawny rats,
Grave old plodders, gay young friskers,
Fathers, mothers, uncles, cousins,
Cocking tails and pricking whiskers,
Families by tens and dozens,
Brothers, sisters, husbands, wives —
Followed the Piper for their lives.
From street to street he piped advancing,
And step for step they followed dancing,
Until they came to the river Weser
Wherein all plunged and perished
— Save one who, stout as Julius Caesar,
Swam across and lived to carry
(As he the manuscript he cherished)
To Rat-land home his commentary,
Which was, At the first shrill notes of the pipe,
I heard a sound as of scraping tripe,
And putting apples, wondrous ripe,
Into a cider-press’s gripe:
And a moving away of pickle-tub-boards,
And a leaving ajar of conserve-cupboards,
And a drawing the corks of train-oil-flasks,
And a breaking the hoops of butter-casks;
And it seemed as if a voice
(Sweeter than by harp or by psaltery
Is breathed) called out, Oh rats, rejoice!
The world is grown to one vast drysaltery!
‘So munch on, crunch on, take your nuncheon,
‘Breakfast, supper, dinner, luncheon!
And just as one bulky sugar-puncheon,
Ready staved, like a great sun shone
Glorious scarce an inch before me,
Just as methought it said, Come, bore me!
— I found the Weser rolling o’er me.

Since it is off the topic at hand I will make another post (The other post!) later on the reference to Julius Caesar saving his commentary. The standard explanation across the Longman, Ohio, and Oxford editions of Browning’s poems is to the effect that – quoting the Longman – ‘when Caesar’s ship was captured at Alexandria, he swam ashore carrying the MS of his historical memoir, De Gallico Belli (my Latin conscience has to correct that to De Bello Gallico).’ There are problems with this.