Observers' Field Reports 



219 



twelfth station, Bridgetown, Barbados, occupied on the return to Washington, was a 

 practical reoccupation of the station of 1905 and an exact reoccupation of the station of 

 1908. Mr. Wise, accompanied by Mr. A. Thomson, who had charge of the atmospheric- 

 electric work, left Washington on March 18 and returned on August 6, 1919. The 

 magnetic stations occupied were as follows: 



Table 41. 



No. 



6 



7 



8 



9 



10 



11 



12 



Name 



Quixada 1 



Iguatu 



Fortaleza 1 . . . . 

 Camocim 



Sobral 



Nova-Russas . 

 Amarracao. . . 



Natal' 



Cabedello 1 . . . . 

 Pernambuco . . . 

 Pinheiro, A t B 

 Bridgetown .... 



Date 



1919 

 Apr. 23 

 " 25-26 

 " 29 

 May 8 

 f " 21- ) 

 \june 9 J 

 " 12-13 

 " 22 

 " 28 

 " 29 

 July 3 

 " 18 

 " 28 



Latitude 



58.4 S 

 22.0 S 

 43.3 S 

 54.0 S 



3 41.6 S 



42.5 S 

 52.9 S 

 46.7 S 

 58.5 S 



03.7 S 

 17.9 S 



04.8 N 



Long. East 



321 00 



320 43 



321 30 

 319 09 



319 39 



319 27 



318 21 



324 49 



325 10 

 325 07 

 311 31 

 300 21 



1 Approximate reoccupation of station occupied in 1903 by Brazilian Magnetic Commission. 



Cruises of the Carnegie. The work of the Carnegie, since publication of Volume III, 

 will be fully discussed in Volume V of these Researches. During Cruises III, IV, V, and the 

 portion of Cruise VI carried out within the interval covered by this volume, observations 

 have been regularly made at land stations at all ports of call; in some cases these are 

 only the usual set of land-station observations, in others they consist of extended com- 

 parisons between standard land instruments of the ship's equipment and the instruments 

 used for observations at sea, again, others are elaborate comparisons with magnetic 

 observatories. Only the results obtained by the standard instruments in the usual 

 set of land observations are published here. 



During Cruise III, June to October 1914, land stations were established at Hammer- 

 fest, Norway, and on the islands in the immediate vicinity, at Reykjavik, Iceland, and 

 at Greenport, Long Island. On Cruise IV the vessel started from Brooklyn, New York, 

 in March 1915, passed through the Panama Canal, called at Honolulu, Hawaiian Islands, 

 went northward to Dutch Harbor, Alaska, and thence made a continuous voyage lasting 

 89 days to Port Lyttelton, New Zealand. Between December 6, 1915, and April 1, 1916, 

 the Carnegie sailed eastward from Port Lyttelton, keeping in general between parallels 

 of latitude 50 south and 60 south, called at South Georgia Island (see view 3 of Plate 7), 

 and, after a brief stay, continued eastward until Port Lyttelton was again reached. 

 When the land observations were completed the vessel left port on May 17, 1916, arrived 

 at Pago Pago, Samoan Islands, on June 7, at Guam Island (see view 2 of Plate 7) on July 

 17, and at San Francisco, California, on September 21, 1916. After shore work and 

 minor repairs the cruise was continued southward around Cape Horn, calling en route 

 at Easter Island in the latter days of December and completing Cruise IV on arrival at 

 Buenos Aires, Argentina, on March 2, 1917. Because of the war and consequent dangers 

 to navigation the voyage home, Cruise V, was made by way of the Pacific and the Panama 

 Canal. The Carnegie left Buenos Aires on December 4, 1917, passed around Cape Horn, 

 called at Talcahuano, Chile, on January 11, and arrived at Callao, Peru, February 22, 

 1918. The voyage home was completed by passing through the Panama Canal, and 

 thence to Washington by way of Newport News, where the party arrived June 10, 1918. 

 Considerable alterations were made to the vessel during the succeeding year, after which, 



