Read it through once

Joe was evidently made uncomfortable by what he supposed to be my loss of appetite, and took a thoughtful bite out of his slice, which he didn’t seem to enjoy. He turned it about in his mouth much longer than usual, pondering over it a good deal, and after all gulped it down like a pill. He was about to take another bite, and had just got his head on one side for a good purchase on it, when his eye fell on me, and he saw that my bread and butter was gone.