To Marilla - Liberia Rd territory sketching -
Stop a moment at...a hill above Potterville - A bright sunshiny day, with enough chill in the air to suggest maple sap running. A bluebird flies back and forth, singing....I broke a small twig on a maple tree (1/8 inch thick) to see how soon the sap would come. It came immediately, and kept dropping regularly (I timed it at one drop every 15 seconds.)
Charles E. Burchfield, March 20, 1942