I would have never guessed what these beautifully illustrated objects represent. They remind me of molecules and atoms or the various forms in which snowflakes appear to us. But instead of adding a beautiful white layer to the world, these little creatures can cause some of us a lot of trouble during the summer. Ueber den Pollen was published in 1837 by St. Petersburg based German pharmacist and chemist Carl Julius Fritzsche. Here you can flip through the whole book.