DEAR SIR: The Mexican Ocean Mail and Inland Company, and Charles Morgan, of New York, (through the agency of the undersigned,) present the following facts, and ask such decision as an impartial consideration of this memorial may produce. The company (having obtained from the government of Mexico peculiar and well-authenticated privileges, whereby they were enabled to present to the United States Post Office Department a schedule of mail service which should insure the transmission of mails between New Orleans and San Francisco in the short space of sixteen days) urged the department for a mail contract authorizing the service, which was granted, subject to an appropriation by Congress for payment. Thereupon the company commenced proceedings for putting the route into active operation. Proper agents were despatched to Mexico, and have been actively engaged in overcoming such obstacles as, unremoved, would have impeded rapid transit across that country. Roads were improved, others made; coaches, harness, mules, and horses have been purchased, and a large portion of them are already on the route, ready to commence the carrying of the mails. In connexion with, and forming a portion of, this through-route, a mail service from New Orleans to Vera Cruz has been put into operation, the schedule for which was so arranged as to meet at Acapulco with the mail steamers on the Pacific, insuring a proper connexion on that end of the line. Thus nothing stood in the way of the successful operation of the route, save the obstacles on the land, which, being overcome, would enable us at once to perform our contract in the specified time; but now that arrangements are completed for this portion on the service, your memorialists find that an alteration in the running on the Pacific has thrown out of gear this well-arranged system. By the present schedule between New Orleans and Vera Cruz, it is impossible to meet the Pacific steamers, as they now run, at Acapulco, without suffering long delays at the latter point, entirely ruining the efficacy of this otherwise desirable medium of transit. The undersigned, C. Morgan, now urges that a knowledge of the existence of a through-service to San Francisco was the inducement for his accepting the portion of service between New Orleans and Vera Cruz; as, upon the successful working of the through-route, he depended for any profits that might inure to his ships from his connexion therewith. He has already put upon the route a first-class steamship of over 1,100 tons burden, and is building another of about 1,500 tons burden for the same purpose; which two vessels will embrace an investment of nearly $300,000 for this first portion of the enterprise. The company depend upon appropriations by Congress for the means of remuneration; and as such appropriations can only be secured by proofs of the practicability of the through-route, as per schedule, they, together, ask your consideration of the efforts