Mr. Bigler was opposed to Congress extending slavery in the territories, and against Congressional intervention with slavery, and would stand by the Baltimore and Cincinnati platforms of the Democratic party. He believed the best interests of the country were in the hope of the Democracy. Mr. Douglas is a powerful debater, quick, ready at repartee, strong in his logic, and possessing that animal courage which is so necessary to the successful debater. Few men equal him in senatorial debate for rough power. There are many who surpass him in silvery eloquence, who excel him in winning, courteous debate, but no one in the present Senate who has quite his _force_ and overwhelming courage. In the debate, which we have abbreviated, Mr. Douglas was for hours--from noon till nine o'clock in the evening--obliged to defend himself against a half-dozen able and eloquent senators. His manner, his voice, were at times like that of a wounded lion--deep, strong and melancholy; but he fought to the last without a moment's thought of quailing. Mr. Douglas has no sympathy with the anti-slavery sentiment of the free States, but plants himself upon his principle, and puts slavery and freedom upon the same footing. If the people want slavery, let them have it. If they want freedom--no interference in favor of slavery. This we understand to be his position, though some of his southern friends claim that he admits that the Supreme Court is bound to give slavery an existence _in all the territories_. In his New Orleans speech of last winter, Mr. Douglas is reported to have said: "Whenever a territory has a climate, soil and production, making it the interest of the inhabitants to encourage slave property, they will pass a slave code, and give it encouragement. Whenever the climate, soil and production preclude the possibility of slavery being profitable, they will not permit it. You come right back to the principle of dollars and cents. I do not care where the migration in the southern country comes from; if old Joshua R. Giddings should raise a colony in Ohio, and settle down in Louisiana, he would be the strongest advocate for slavery in the whole South; he would find, when he got there, his opinion would be very much modified; he would find on those sugar plantations that it was not a question between the white man and the negro, but between the negro and the crocodile.