The facts plainly and simply told by the log of the schooner show that Davis was in constant communication with Mora, and that he was fully aware of the value of the Granada to Walker, and of the importance the Allies attached to her presence at San Juan del Sur. It was with a full and thorough knowledge of the ineffectual efforts Mora had made to get the schooner that Davis reached the headquarters of the Allies, whence on the afternoon of the 30th, he sent a letter to Walker by an aide-de-camp of the Costa Rican general-in-chief. The latter proposed that Walker should abandon Rivas and go aboard of the St. Mary’s to Panama, Davis undertaking to guarantee his personal safety. Although the tone of the letter was offensive, Walker, thinking Davis might have some information he did not possess, and unwilling to let slip an opportunity of gaining knowledge as to what was passing between Davis and the Allies, replied that the proposition of the United States commander was vague, and suggested a visit on his part to Rivas. Davis answered that he was sorry Walker found his proposition vague; that he proposed the latter should “abandon the enterprise and leave the country;” that Walker might rely on the fact of Lockridge having left San Juan river; and finally that he had maturely considered the invitation to enter Rivas, and had decided, unreservedly, not to take such a step. Thus did the United States commander refuse to see for himself the state of the force in Rivas before he determined on the course he should pursue. In reply to the second letter of Davis, Walker proposed to send two officers, Henningsen and Waters, to confer with the United States commander, provided they had safe conduct from Mora. The required safe conduct was forthwith sent, and with a short note in the handwriting of Zavala, but signed by Davis, saying that Henningsen and Waters should proceed at once to the headquarters of the Allies, as the commander of the St. Mary’s was obliged to return speedily to San Juan del Sur. Accordingly, Henningsen and Waters proceeded to the headquarters of the Allies, and what there passed may be best told in the words of the written report Henningsen made to Walker on the 2d of May. The report says:— “In conformity with your instructions on the night of the 30th of April, I proceeded with Col. Waters to the enemy’s camp at Cuatro Esquinas, to confer on your behalf with Capt. Davis of the U. S. sloop-of-war St. Mary’s. Capt. Davis remarked that he was in possession of information, which, in his opinion, rendered your position at Rivas untenable, and that he had, therefore, with the view of saving further useless effusion of blood, opened negotiations with the Allies for the evacuation of that place, in the event of his being able to obtain your concurrence.