́aviation companies, operating independently, serve various population centers in the Republic. Brownsville-Mexico City-Guatemala.-Operating schedules of the larger routes are as follows: Over the international route of Pan American Airways there is a daily service in each direction between Brownsville and Mexico City via Tampico, a distance of 466 miles flown in 3 hours and 25 minutes, including a 20-minute stop at Tampico. Mondays, Wednesdays, and Fridays this service continues from Mexico City to Guatemala, capital of Guatemala, via Tapachula, Mexico, a distance of 675 miles. Flying time from Mexico City to Guatemala, plus a 25minute stop at Tapachula, is 4 hours and 40 minutes. Return flights from Guatemala to Brownsville, Tex., via Mexico City, a distance of 1,161 miles are made Mondays, Thursdays, and Saturdays. Tampico-Mexico City.-Between Tampico and Mexico City the Compania Mexicana de Aviacion, S. A., operates daily (except Sunday) flights in each direction via Tuxpan. Distance, 244 miles (393 kilometers). Trip takes 1 hour and 55 minutes, including a 10-minute stop at Tuxpan. Miami-Merida.-The Pan American maintains a weekly service leaving Miami early Thursday morning and arriving in early afternoon at Merida, Yucatan, via Habana, a distance of 748 miles. Return flight to Miami from Merida via Habana is made every Friday. Merida-Mexico City.-Between Merida, Yucatan, and Mexico City the Compania Mexicana de Aviacion service is available daily except Sunday in each direction via Campeche and Ciudad del Carmen, State of Campeche; Villahermosa, State of Tabasco; Minatitlan and Veracruz (Tejeria), State of Veracruz. The route is 734 miles. The trip takes 6 hours 30 minutes, including 1 hour 30 minutes in stops of 15 and 20 minutes each. Villahermosa-Mexico City.-Between Villahermosa (State of Tabasco) and Mexico City there is a Sunday service in each direction over the 434-mile route. Trip, 3 hours 5 minutes, no stop being made at Veracruz (Tejeria) in either direction and other stops totaling 40 minutes. Los Angeles-Mexico City.-Between Los Angeles and Mexico City the Compania Mexicana de Aviacion, S. A., operates a triweekly service in each direction via Mexicali, Hermosillo, Mazatlan, and Guadalajara, a distance of 1,619 miles. Trip takes 11 hours and 55 minutes, including 1 hour and 45 minutes for scheduled stops. Flights from Los Angeles are made on Tuesdays, Thursdays, and Saturdays; from Mexico City, on Mondays, Wednesdays, and Fridays. Ciudad Juarez-Mexico City.-Compania Lineas Aereas Mineras, S. A., operates triweekly services between Ciudad Juarez (across from El Paso, Tex.) and Mexico City in each direction, via Chihuahua and Parral, State of Chihuahua; Torreon, State of Coahuila; and Aguascalientes, State of Aguascalientes. Planes leave Ciudad Juarez early Tuesday, Thursday, and Saturday mornings, and arrive at Mexico City late afternoon of those days. Mexico City to Ciudad Juarez service is on Mondays, Wednesdays, and Fridays, leaving early morning and arriving late afternoon. Distance, 1,034 miles; time, 10 hours 35 min- Sis utes, including stops of 25 to 30 minutes totaling 1 hour 45 minutes. SERVICES OF PRINCIPAL OPERATING GROUPS The following compilation gives data concerning air-service routes in Mexico. Included in these data are the name of the operating entity and an indication of possible trips. As schedules and transportation charges are subject to change, the traveler is referred to recognized ticket agencies or the offices of the operating companies for latest information. American Airways Brownsville, Tex.-Mexico City, via Tampico, State of Pan Tamaulipas. Miami-Merida, State of Yucatan, via Habana. Tampico, State of Tamaulipas-Mexico City, via Merida-Mexico City, via Campeche and Ciudad Los Angeles-Mexico City, via Mexicali, Lower Cali- Merida, Yucatan-Chetumal, Territory of Quintana Villahermosa-Tenosique, via Emilio Zapata (all in Villahermosa-Alvaro Obregon (Frontera), State of Villahermosa-Paraiso, via Comalcalco (all in State of Villahermosa, Tabasco-Yajalon, Chiapas, via Macus- Villahermosa, State of Tabasco-Pichucalco, State of Villahermosa-Humanguillo, via Cardenas (all in State I Table 13.-Principal Air Services in Mexico-Continued Sistema Compania Aero nautica del Sur, S. A. Villahermosa-Jalpa de Mendez, via Cunduacan (all in Villahermosa, State of Tabasco-Coatzacoalcos (Puerto Sistema Francisco Buch de Jalapa-Villa Cuauhtemoc, via Gutierrez Zamorra, Parada. Do.. Do.. Aeronaves de Mexico, S. A. Poza Rica, Tuxpan, and Villa Cuauhtemoc (all in Jalapa-Coatzacoalcos (Puerto Mexico), via Cordoba, Jalapa-Misantla, via Vega de Altatorre (all in State of Mexico City-Acapulco, State of Guerrero. Oaxaca, State of Oaxaca-Acapulco, State of Guerrero Servicio Aereo Panini...... Mexico City-Colima, State of Colima, via Morelia, Do.... Servicios Aereos Zarate... Acapulco, State of Guerrero-Uruapan, State of Michoacan, via Tecpan, State of Guerrero; Petatlan; La Union; Arteaga and Apatzingan, State of Michoacan. Mazatlan, State of Sinaloa-Tayoltita, State of Durango Durango, State of Durango-Mazatlan, State of Sinaloa. Guadalajara-Puerto Vallarta via Talpa and Mascota (all in State of Jalisco). Compania Lineas Aereas Do.. Compania Aeronautica de Parral-Guadalupe y Calvo (State of Chihuahua). Santa Rosalia-La Paz, via Loreto and Punta Cortez (all in Lower California); and from La Paz to San Jose del Cabo. COMMUNICATION Telephone, Telegraph, Cable, and Radio.-The Compania Telefonica y Telegrafica Mexicana (an affiliate of the International Telephone & Telegraph Co.) and the Empresa de Telefonos Ericsson, S. A., furnish telephone service in Mexico to all important commercial and industrial centers, as well as to many isolated towns. Long-distance calls over one system may be routed, at no extra charge, over the lines of the other to reach a subscriber of the latter. Rates of the two companies are the same. Calls may be made to any destination in the United States or Europe via the system of the Compania Telefonica y Telegrafica Mexicana, and to many telephones in the United States and Europe via the lines of the Empresa de Telefonos Ericsson, S. A. By the system operated by the Direccion General de Correos y Telegrafos (Directorate General of Posts and Telegraphs) within the Government department the Secretariat of Communications and Public Works, all important population centers and many small towns can be reached by telegraph. The Directorate General also operates the radiotelegraphic service to the United States, Europe, Asia, and Africa. The Compania Telegrafica Mexicana (Western Union affiliate) operates a combined telegraph and cable service to the United States and an international cable and telegraph service from its offices in Mexico City. ENTRY REQUIREMENTS Sanitary Regulations.-Visitors to Mexico will not be vaccinated against smallpox at the port of entry provided they show their tourist card or other documents. It is advisable, however, to be in possession of a vaccination certificate to show the American authorities on return to the United States. Necessary Documents.--Tourists to Mexico from the United States are not required to present passports. A "tourist card," obtainable at the nearest Mexican consulate at a fee of $1, is required. This card is good for 6 months and may be restamped for an extension of an additional 6 months upon request at the Departmento de Migracion (Immigration Department) of the Secretaria de Gobernacion, Bucareli 99, Mexico City, or at branch offices of the Departmento de Migracion in other parts of Mexico. At the port of entry the tourist must prove to customs officials that he has adequate funds in cash for his stay in Mexico. A minimum amount deemed suitable for this purpose has been stated as 200 pesos a month. Tourists entering Mexico on a "tourist card" are forbidden by law to engage in any kind of business or to change their status in any manner while there; infractions are subject to legal penalties. A naturalized American citizen, in order to avoid possible difficulty in reentering the United States, should have with him his naturalization certificate. An alien should possess a passport, head tax receipt, or identification card, to prove legal domicile in the United States. An American commercial traveler or representative should obtain Form 5, stamped "Visitante," through a Mexican consul in the United States. The applicant must supply the consul with four profile and four full-face photographs. The consular fee is 4 pesos for issuance of the "Visitante" card, which establishes the status of the commercial representative and accords him legal entry into Mexico. According to interpretations of the law by immigration authorities, the status of "commercial traveler" will be accorded only when the object of the trip is to appoint distributors or to consult with distributors already appointed. The position is taken that there are in Mexico enough salesmen of Mexican nationality to effect prospective direct sales. The commercial traveler or representative is required to post a bond of 250 pesos at the port of entry to guarantee his departure from Mexico within the period specified on his "Visitante" card. The maximum period of issue is 6 months. To assure return of his bond in case he leaves by a border point other than that by which he entered, the commercial traveler is required to have his card stamped, on the date of his departure, at the nearest office of the Departamento de Migracion of the Secretaria de Gobernacion; promptly on his return to the United States he should apply at the Mexican consulate through which he obtained his "Visitante" status for a return of the amount of his bond, and should present his stamped card in evidence of compliance with legal requirements. Should he leave via his port of entry, he should apply at the customs office for the return of his bond. If the commercial traveler wishes to make more than one trip to Mexico during a single year, he should apply to the Departamento de Migracion, Secretaria de Gobernacion, Mexico City, for Form 10-previously having obtained, however, Form 5 (“Visitante" status) and Form 14. The latter form (for the registration of foreigners in Mexico) costs 10 pesos. Experience demonstrates that about 6 weeks elapse before a reply to an application for a commercial traveler's "Visitante" permit is received by the Mexican consulate in the United States. This period may be reduced if the consul is authorized to communicate with Mexico City authorities by air mail or by telegraph for similar reply-all of which is at the applicant's expense. When the request is originally made to the Mexican consul, the prospective commercial traveler should state specifically the purpose of his visit to Mexico. Such general statements as "to travel in Mexico" should be avoided, as they are conducive to delay. Investors (Inversionistas).—An immigrant wishing to enter Mexico to engage in agriculture, industrial development, or export trade, must prove that he will invest: (a) 100,000 pesos if the enterprise is to be located in the Federal District; or (b) 20,000 pesos, if in State capital; or (c) 5,000 pesos if in other localities. The investor must secure Form 5, permitting his legal entry. At port of entry an investor from the United States must post a repatriation bond of 250 pesos to guarantee his return. (For other countries the amount of bond for a citizen varies in proportion to that country's distance from Mexico.) In addition, the investor must deposit a 500-peso bond to guarantee that he will invest the amount of money specified and that he will not change his status during the first 5 years of his residence. He must report to the Secretaria de Gobernacion annually, to present proof that he is engaged in the same busi |