108 



Land Magnetic Observations, 1911-13 



The following is a list of the stations occupied between May 17 and December 25, 

 1913, at which date I left on my return to Washington: 



33. Yaguarazapa, Paraguay. 



34. Ituzaingo, Argentina. 



35. Ita-Ybate, Argentina. 



36. Itati, Argentina. 



37. Corrientea, Argentina. 



38. Villa del Pilar, Paraguay. 



39. Formosa, Argentina. 



40. Villa del Rosario (Puerto), Paraguay. 



41. Concepcion, Paraguay. 



42. Puerto Pinasco, Paraguay. 



43. Murtinho, Brazil. 



44. Barranco Branco, Brazil. 



45. Porto Esperanja, Brazil. 



46. Bahia Negra, Paraguay. 



47. CorumbA B, Brazil. 



48. Conimbd A, Brazil. 



Of the above, Nos. 5 and 6 were repeat stations of the Department, Nos. 1, 2, 3, 19, and 

 47 were repeat stations of the Brazilian service, Nos. 17, 21, 29, 30, 31, 34, and 37 were more 

 or less exact reoccupations of repeat stations of the Argentine service, and Nos. 7 and 8 

 were repeat stations of other services. The itinerary of the work was as follows: 



On being relieved from the Carnegie, I proceeded to Rio de Janeiro, where comparisons 

 with the instruments of the Brazilian survey were secured at Vassouras. Two stations 

 were occupied en route from Rio de Janeiro to Buenos Aires, travel being by coasting-steamers 

 which run each week and call at all the small ports on the coast. Intercomparisons were 

 then made at the Pilar Magnetic Observatorj' and the repeat station of Victoria near 

 Buenos Aires was reoccupied. Then I observed at Montevideo and distributed 9 stations, 

 as equally spaced as possible, along the railroad lines of Uruguay. The train service was 

 a uniform one of three times a week on all the lines. 



After completing the work in Uruguay, I occupied one station in Brazil and 4 stations 

 in the province of Corrientes on the northeastern Argentine railway. I proceeded then to 

 Asuncion, occupying one station at Trinidad and afterward 4 stations along the line of the 

 Paraguay Central Railway. I next occupied on the Alto Parand,, 9 stations, distributed 

 with fair unifonnity between Puerto Britannia, the limit of navigation, and Corrientes at 

 the mouth of the river. Travel on this river was by small river steamer, there being on 

 the average two each week. After leaving Corrientes, I occupied 9 stations while traveling 

 up the river Paraguay. On reaching Corumba, Brazil, I found that unfortunately the 

 rainy season had commenced. Accordingly, field work was closed and on December 25 

 I left Corvmibd, arriving in Washington February 3, 1914. 



The total time spent in the field was 263 days, which, counting in all delays, gives an 

 average field time per station of 4.5 days. The total travel approximated 14,600 miles, 

 9,000 miles of which were travel to and from the field. The field travel consisted of 2,200 

 miles by river boat and 3,400 miles by railroad, thus making the average field travel per 

 station 117 miles. 



In general there was very little local disturbance; the only region where it was anyway 

 marked was on the Alto Parand. 



Cordial assistance was rendered by the American consuls in the various countries 

 visited. In Brazil, Dr. Morize secured passes and permission for a telegraphic signal and 

 Ambassador Edwin Morgan obtained letters of introduction. In Argentina, Dr. Davis, 

 director of the Meteorological Service, was of invaluable assistance, and through the cour- 

 tesy of the Director of Telegraphs I obtained 4 time signals from Cordoba. In Uruguay, 

 Mr. Bassano, head of the Meteorological Service, secured letters of introduction to officials 

 in the various towns visited. In Paraguay the Minister of Foreign Relations gave very 

 valuable assistance. 



