DEPARTMENT OF TERRESTRIAL MAGNETISM. 287 



Jeddah and Aden, Arabia, and Jibuti, French Somaliland. While 

 returning he occupied during October to December 1918 a second 

 station at Addis-Abeba, Abyssinia, in the vicinity of the first station 

 occupied in this city in 1914 by W. F. WaUis, repeat C. I. W. stations 

 at Colombo, Ceylon (1911), Singapore, Straits Settlements (1913, and 

 a new station), and Sugita, Japan (1906). He arrived in San Francisco 

 December 26, 1918, thus completing a field trip of over 3 j^ears, during 

 which time he observed at 170 stations, chiefly in Africa, of which a 

 large number were reoccupations. 



In January 1919 three cahiers of observations were received for 

 stations in Siberia occupied by Captain R. Amundsen and his assistant, 

 with magnetic equipment loaned by the Department (see report for 

 1918, p. 240). These stations were at Vaigach (latitude, 69 ?7 N., 

 longitude, 60?2 E.), occupied August 12-13, 1918;Khabarowa (latitude, 

 69?7 N., longitude, 60?4 E.), occupied August 15, 1918; and Port 

 Dickson (latitude, 73 ?5 N., longitude, 81 °E.), occupied September 2-3, 

 1918. The station at Khabarowa is probably close to the 1893 station 

 of the Norwegian North Polar Expedition. 



Professor Boris Weinberg of the University of Tomsk, Siberia, was 

 loaned a land dip-circle and tripod to complete the magnetic outfit 

 with which he hopes to secure in 1919 some observations in Siberia. 



AUSTRALIA. 



The only field stations occupied b}^ the Department in Australia 

 during the year were those at the absolute magnetic observatory near 

 Watheroo, Western Australia. 



Since the last report there have been received from Government 

 Astronomer G. F. Dodwell, of the Observatory, Adelaide, cahiers of 

 magnetic observations made in cooperation with the Department by 

 the Geodetic and Magnetic Survey of South Australia by himself and 

 Professor Kerr Grant at 11 stations in South Australia in September 

 1915, May 1916, February and March 1917, and January 1918. These 

 form a valuable contribution to the magnetic survey of South Aus- 

 tralia, 



NORTH AMERICA. 



Magnetician H. W. Fisk, with the assistance of Observers H. R. 

 Grummann and R. R. Mills, carried out a series of magnetic observa- 

 tions at 13 stations along the shores of Chesapeake Bay below and 

 opposite the mouth of the Patuxent River. This work was mainly to 

 determine if any appreciable local disturbance exists about the region 

 in the bay where the Carnegie was swung in June 1918 at the close of 

 Cruise V and in October 1919 at the beginning of Cruise VI; the oppor- 

 tunity was also taken to instruct the new members of the party in field 

 observations and practice. The results indicate a slight irregularity 

 in the magnetic distribution over the region investigated, but the dis- 



