This Lime-Tree Bower My Prison Time Quotes
How we cite our quotes: (line)
To that still roaring dell, of which I told;
The roaring dell, o'erwooded, narrow, deep,
And only speckled by the mid-day sun; (9-11)
His friends enter the valley around mid-day, with the sunlight passing down directly through the branches. The forest is so dense that only some of the light makes it through to the ground.
With some fair bark, perhaps, whose sails light up
The slip of smooth clear blue betwixt two Isles
Of purple shadow! (25-27)
This poem has many images of objects being "lit up" by afternoon or evening light. Think of all the leaves and trees that are illuminated. The light on the sails contrasts with the "purple shadow" of the islands. The sails just catch the last bit of daylight.