Observers' Field Reports 



211 



Table 36 gives names of the stations occupied, with dates of occupation and geo- 

 graphic positions; for magnetic data, see Table of Results. 



Table 36. 



No. 



1 

 2 

 3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 

 14 



Name ' 



Havana 



Colon, Sweetwater, A . . . 

 Colon, Washington Hotel 



Turnaco 



Quito 



Riobamba 



Guayaquil 



Lima, Hipodromo 



Matucana 



Huacho 



Sayan 



Yangas, A, B, C, D, E . 



Mollendo 



Arequipa, A, B 



Date 



Oct. 



Nov, 



Dec. 



1916 



5 

 10 



11-12 

 21-22 

 29 

 31 



2-3 

 13-15. Dec. 28 

 24-25 



1-2 



9-10 

 19-25 

 1917 



Jan. 2 



5-30 



Latitude 



23 

 9 



9 



1 

 

 1 

 2 



12 

 11 

 11 

 11 

 11 



17 

 16 



06.4 N 

 21.3 N 



22.0 N 

 48.3 N 



13.1 S 



39.5 S 

 10.8 S 



04.3 S 

 50.8 S 

 06.7 S 



08.4 S 

 41. 8S 



01. 8S 



22.5 S 



Long. East 



277 39 



280 03 



280 05 



281 14 

 281 20 



281 18 

 280 09 



282 58 



283 36 

 282 22 



282 48 



283 10 



287 59 



288 27 



'The stations are in following countries: No. 1, Cuba; Nos 2 and 3, Panama; No. 4, 

 Colombia; Nos. 5 to 7, Ecuador; Nos. 8 to 14, Peru. 



Owing to the fact that the work of the party was not in the nature of the ordinary 

 magnetic survey, the averages per station are not truly representative for survey sta- 

 tistical data. Fourteen stations were occupied in 138 days, averaging nearly 10 days 

 per station. We traveled in all about 5,900 miles, of which about 600 miles were by 

 rail. The average cost was about $108 per station for field expense. 



No very marked local magnetic disturbances were noted, although the sand along 

 the entire coast of Peru contains a great quantity of magnetic particles, which cling to 

 a magnet like iron filings. 



During the whole trip we were received with the greatest courtesy and consideration. 

 The American diplomatic and consular officers rendered much assistance. The Minister 

 of Interior of Peru, through Senor G. Cisneros y Raygada, furnished us with valuable 

 letters of introduction to local officials concerning free entry of instruments and equip- 

 ment; Senor Jose' A. de Iscue, secretary, and Senor Salvador del Solar, engineer, of 

 the Junto Departamento de Lima, were both very active in aiding us in many ways. 



D. M. Wise, on Magnetic Work in Peru, May to Seftember 1917. 



In accordance with instructions of April 30, 1917, received through Mr. J. A. Flem- 

 ing at Lima, Peru, I began on May 1, 1917, to arrange for conducting a magnetic-survey 

 expedition into central and northern Peru. Mr. Bradley Jones, who had been detached 

 from the Carnegie party at Buenos Aires, joined my party on May 3, and together we 

 reoccupied my Lima station of 1916, purchased provisions, equipment, and gear, and 

 obtained what information was available concerning the difficult interior trip which 

 had been assigned us. The instrumental equipment, sufficient for two parties, which 

 was carried from Lima, consisted of theodolite-magnetometer No. 10, magnetometer- 

 inductor No. 28, dip circle No. 202, 2 observing tents, three pocket chronometers, 2 

 watches, and the miscellaneous accessories usually carried by a magnetic-survey party. 

 After the joint occupation of a few stations, Mr. Jones and I were to separate and cover 

 different routes. 



We proceeded from Lima to Oroya on May 16, the trip being made over the Central 

 Railway of Peru, which crosses the western Andes 15,670 feet above the sea-level. 



