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This festive bit of retro science goodness comes from Snowflakes: a Chapter from the Book of Nature (1863). According to the book, the sketches are

… representations of individual crystals, actually observed and sketched with the aid of the microscope

I don’t own a copy of this particular book of nature circa 1863, but The Public Domain Review has done a great job of compiling the images.

20121209-230337.jpg

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