ClipArt ETC
"A leaf of Acacia. A, as seen by day; B, the same leaf asleep at night." -Bergen, 1896

Acacia Leaf

"A leaf of Acacia. A, as seen by day; B, the same leaf asleep at night." -Bergen, 1896

"A leaf of red clover. At the left, leaf by day; at the right, the same leaf asleep at night." -Bergen, 1896

Red Clover Leaf

"A leaf of red clover. At the left, leaf by day; at the right, the same leaf asleep at night." -Bergen,…