From the New-Orleans True Delta, June 21.

 

          The steamship Cah(t)awba, JOHNSON, New-Orleans 26th inst., 6 P. M., and the Bar at 5:30 P. M., with sick and wounded soldiers to U.S. Assistant Quartermaster, arrived here early yesterday morning. On Saturday last, about three hundred and fifty of the wounded from the battle of Sabine Cross-Roads, arrived in this city, under the charge of Drs. SADLER and WILLIAMS -- these were the survivors of those left on the field after the fight -- these medical officers remaining at the field hospitals with their men, a most commendable and praiseworthy act, especially as they had ample opportunity to escape. They sent their horses to the rear with wounded soldiers. Out of five hundred left on the field, one hundred and sixty died; this great mortality was owing to the fact that all the slightly wounded escaped. The Surgeons speak favorably of the kindness of the rebels. And we desire to bear testimony to the thoughtfulness of Gen. BANKS, who sent a supply of medical and sanitary stores by flag of truce immediately after the second day's fight; and to the magnanimity of Gen. DICK TAYLOR, who promptly delivered them to the Surgeons, and permitted them to bring away all that remained, when he paroled the wounded. This was a generous act, that would not have been done at Richmond, and leads us to notice the fact that humanity decreases as one advances toward the rebel Capital. We believe that, as a rule, whenever our prisoners have fallen into the hands of the regular rebel army in Louisiana, they have been fairly treated.

          Exceptions have occurred to this rule, but they have been mostly either by guerrillas, or by stragglers and detached parties from the main army, where the Commander-in-Chief had no means of preventing the crime.

          We now only speak of white soldiers -- the same statement will not hold good when applied to our negro troops. Lists both of the dead and the living are, we believe, in the hands of JAMES B. CHADWICK, special agent for the Cincinnati branch of the Sanitary Commission, from whom those having friends reported as "missing" in that battle may obtain information. Dr. SADLER informs us that DICK TAYLOR has been or will be relieved in a few days. He will take a higher command, and is to be succeeded by Gen. WALKER. No change of importance has been made in the rebel force, save the detachment of a few regiments to aid PRICE.

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