500
What did Elmer take in his father's knapsack?
He took chewing gum, two dozen pink lollipops, a package of rubber band, black rubber boots, a compass, a toothbrush and a tube of tooth paste, six magnifying glasses, a very sharp jackknife, a comb and a hairbrush, seven hair ribbons of different colors, am empty grain bag with a label saying "Cranberry," some clean clothe, and enough food to last my father while was on the ship.