Child's Calendar Beautiful, December, Fifth Year

I love this one, and I'd never seen it before:

Frost-Work
These winter nights, against my window-pane
Nature with busy pencil draws designs
Of ferns, and blossoms, and fine spray of pines,
Oak-leaf and acorn, and fantastic vines,
Which she will make when summer comes again,
Quaint arabesques in argent, flat and cold,
Like curious Chinese etchings. -By and by,
Walking my leafy garden as of old,
These frosty fantasies shall charm my eye
In azure, damask, emerald, and gold.

~Thomas Bailey Aldrich