March 25.—A very beautiful day. I feel very low-spirited regarding our cause. A friend, Dr. —— has just called, and has not served to dispel the gloom. He denounced President Davis, and said that, in putting negroes into the field, he should have given them not only their own freedom but that of their families. He added, that Davis’s last proclamation was the essence of despair, and that he and all in congress know that our cause is gone, and that we soon shall be subjugated. I contended against him to the best of my ability, and said, that if even both our armies were scattered we would not then give up. I could not help feeling there might be some truth in what Dr. —— said.