DEPARTMENT OF TERRESTRIAL MAGNETISM. 235 



INSPECTION WORK. 



At the end of the last fiscal year the Director, having completed his final 

 inspection of the work of the Carnegie, then at Batavia, Java, began his 

 return to Washington, where he arrived December 24. En route he visited 

 the magnetic observatories and institutions at Hongkong, Manila, Antipolo, 

 Zi-ka-wei, Tsingtau, Tokio, Honolulu, Mount Wilson Solar Observatory, 

 and the Tucson Magnetic Observatory. 



OCEAN WORK. 



The ocean work of the Department has been continued by the Carnegie 

 in the Indian and North Pacific oceans. At the close of the last fiscal year 

 the vessel was at Batavia, Java, from which point, after the necessary shore 

 magnetic observations had been made and the instruments had been inter- 

 compared with the standards of the Batavia Magnetic Observatory, she 

 sailed on November 21, 191 1, bound for Manila by a circuitous route ar- 

 ranged so as to cover the eastern part of the Pacific Ocean. The course 

 followed was south-southwest in the Indian Ocean to south latitude 30.8 

 and east longitude 89.4 ; thence as far south as 37.5 , in east longitude 95-5°. 

 From this point a general northeasterly course into the China Sea and the 

 North Pacific was followed. The Carnegie reached Manila, Philippine 

 Islands, on February 3, 1912, having been out 75^2 days from Batavia and 

 covering a distance of 8,292 miles; the conditions for observations were 

 good. 



Intercomparisons of instruments were made at the new Manila Magnetic 

 Observatory (situated at Antipolo) with the U. S. Coast and Geodetic Sur- 

 vey standards and with those of the Antipolo Magnetic Observatory. Upon 

 the completion of the land work and of minor repairs in dry dock the Car- 

 negie left Manila on March 24, 19 12, pursuing a northeasterly course off the 

 Lu Chu Islands, and thence practically due east to north latitude 30 and 

 east longitude 166 . Thence the course was in general southward to Suva, 

 Fiji Islands, where the vessel, after having been considerably delayed by 

 head winds, arrived June 7, 75 days out from Manila; the total distance 

 covered from Manila to Suva was 8,158 miles. The track of the Galilee was 

 crossed several times and thus valuable secular variation data have been 

 obtained. 



Upon the completion of the land work at Suva, including a reoccupation 

 of the Galilee station of 1906, the Carnegie left for Papeete, Tahiti, June 30, 

 1912. The departure was considerably delayed by reason of contrary 

 winds and the difficulties of the narrow passage at Suva. A course was 

 steered along the thirtieth parallel south, passing between the outward and 

 homeward-bound passages of the Galilee's last cruise. From near Easter 

 Island a northerly course was followed to the equator ; thence the course was 

 westerly, and then southerly to Tahiti. On crossing the equator, the ship 



