on difficulty of debating with Lincoln, 150;
speaks in Ohio, 151;
in debate ignores secession, 157;
nominated by Democrats in 1860, 163, 164;
reasons why repudiated by South, 164, 165;
his vigorous canvass in 1860, 174, 175;
vote for, 178;
offers to aid Lincoln after fall of Sumter, 251;
value of his assistance, 251.
Dred Scott case,