Our Food Factories

The leaves of trees all about us put on a striking pageant from May to November, for leaves have everything it takes to arrest attention: color, action, mass, and sound effects. Leaves are the most articulate part of a tree. They never sound discords, just as they never have color disharmonies. Their range of tones is symphonic. They produce high clear notes, and deep thunderous roars. They affect a few seconds of suspense in utter silence broken by an intimate whisper. They hum in a steady...