May 28-9. -- I staid to-night a long time by the bedside of a new patient, a young Baltimorean, aged about 19 years, W. S. P., (2d Maryland, southern,) very feeble, right leg amputated, can't sleep hardly at all -- has taken a great deal of morphine, which, as usual, is costing more than it comes to. Evidently very intelligent and well bred -- very affectionate -- held on to my hand, and put it by his face, not willing to let me leave. As I was lingering, soothing him in his pain, he says to me suddenly, "I hardly think you know who I am -- I don't wish to impose upon you -- I am a rebel soldier." I said I did not know that, but it made no difference. Visiting him daily for about two weeks after that, while he lived, (death had mark'd him, and he was quite alone,) I loved him much, always kiss'd him, and he did me. In an adjoining ward I found his brother, an officer of rank, a Union soldier, a brave and religious man, (Col. Clifton K. Prentiss, sixth Maryland infantry, Sixth corps, wounded in one of the engagements at Petersburgh, April 2 -- linger'd, suffer'd much, died in Brooklyn, Aug. 20, '65.) It was in the same battle both were hit. One was a strong Unionist, the other Secesh; both fought on their respective sides, both badly wounded, and both brought together here after a separation of four years. Each died for his cause.