exasperated at retention of McDowell before Washington, 39, 41;
question of his responsibility, 41, 42;
not really trusted by Lincoln, 43;
still outnumbers enemy, 44;
letter of Lincoln to, answering his complaints, 44-46;
takes Yorktown, 48;
advances slowly, 48;
predicts Confederate evacuation of Norfolk, 48;
continues advance, 49, 50;
forbidden to use McDowell so as to uncover Washington, 51;