[Telegram.]

Mr. Campbell to Mr. Seward

My messenger, White, left San Luis Potosi 23d of April, and arrived here this morning. He reports Maximilian with force of fifteen thousand holding Queretaro, surrounded by a liberal force of thirty-five thousand. Imperialists still held Vera Cruz and city of Mexico. Juarez expects to reach the city of Mexico in three or four months. Mr. White brings me despatch from minister of foreign affairs, defending the execution of prisoners at Zacatecas, and intimating that similar severity may be practiced on Maximilian and his leading chieftains, if captured. I send you full despatch by mail.

LEWIS D. CAMPBELL.

Hon. William H. Seward, Secretary of State, Washington, D. C.