President--John Randolph Tucker. Members--James Henry Rochelle, David Porter McCorkle, Walter Raleigh Butt. Secretaries--Timoteo Smith, Maurice Mesnier. Surgeon--Francis Land Galt. Civil Engineers--Manuel Charron, Manuel Rosas, Thomas Wing Sparrow, Nelson Berkeley Noland. Steam Engineers--John W. Durfey, David W. Bains. On arriving in the United States, Tucker established an office in New York, and, assisted by Captain Rochelle and Mr. Sparrow, soon had the charts and plans, with explanatory notes, ready for the hands of the printers and engravers; but in consequence of the financial difficulties into which Peru had fallen, the publication was delayed from time to time and finally abandoned altogether, as is shown by the following letter from Senor Pardo, President of the Republic: LIMA, Marzo 13, 1877. "_Sr. J.R. Tucker._ "_39 Broadway, New York City._ "_Estimado amigo_:--He recibido su apreciable carta de 10 del pasado, que me es grato contestar manifestandole que las graves dificultades economicas porgue hoi atravissa la Republica, oblejan el Gobierno a dar por terminada la comiseon de que fue ud encargado para la publicacion de los Mapas y Cartas topograficas de las regiones Amazonicas. "En esta virtud, se sirvira ud. entregar al senor Freyre, Ministro del Peru en Washington, las reforidas Cartos, Mapas, y todas las demas utiles pertenecientes al Gobierno del Peru, que hoi existen en poder de la Comision que ud. preside; todo bajo de inuentario y con las formalidades necesarias. "En cuanto al pagar de sus suldos y los de los Sennores que forman parte de esa Comision, he ordinado al Ministro de Hacienda disponga lo conveniente para su pronto abono, y juzgo que asi-luego les servan completamente satisfechos. "Deseandole a ud. la mejor conservacion, me as grato reiterarle las expresiones de mi amistad y particular estima." "Su afrino S.S. "PARDO." [TRANSLATION.] "LIMA, March 13, 1877. "_J.R. Tucker, Esq._ "_39 Broadway, New York City._ "_Esteemed Friend_:--I have received and answer with pleasure your appreciated letter of the 10th ultimo, apprising you that the grave economical difficulties which at present afflict the Republic, obliges the Government to order the termination of the commission with which you are charged for the publication of the maps and charts of the Amazonian regions. "For this reason, you will be pleased to deliver to Mr. Freyre, Minister of Peru in Washington, the referred to charts, maps and all other articles belonging to the Government of Peru, which now remain in charge of the Commission over which you preside; all to be delivered under inventories and with the necessary forms.