DEPARTMENT OF TERRESTRIAL MAGNETISM. 327 



previously occupied, comparing standards of the Department with 

 those of the Christchurch Observatory. The station at Point Fareute, 

 Tahiti, was reoccupied in December 1920. Valuable series of observa- 

 tory intercomparisons were obtained in April 1921 at the Honolulu 

 Magnetic Observatory, and in June and July 1921 at the Samoa 

 Observatory. Lack of satisfactory anchorage at Fanning Island 

 unfortunately made it inadvisable to delay vessel for observations there. 



SOUTH AMERICA. 



Absolute magnetic observations were made at the Huancayo Obser- 

 vatory by Magnetician W. F. WalUs, assisted until September by 

 Observer W. H. Wood. The complete program of magnetic-variation 

 observations at the Observatory was to be begun in January 1922. 



NORTH AMERICA. 



In cooperation with the MacMillan Arctic Association, the Depart- 

 ment provided the MacMillan Baffin Land Expedition with equipment 

 for making magnetic, atmospheric-electric, and polar-light observa- 

 tions. Mr. G. Dawson Howell jr., a member of the expedition, was 

 given at Washington the necessary training for field and observatory 

 work. He, with the aid of Mr. Richard H. Goddard, of the Depart- 

 ment staff, will set up a complete magnetograph outfit in a temporary 

 observatory to be erected near the expedition's winter-quarters; it is 

 hoped that the observatory work may be continued for at least 8 to 10 

 months. During the winter (1921-22) it is planned to make magnetic 

 exploration trips starting out from the winter-quarters, which will 

 probably be in the vicinity of Fury and Hecla Strait. The expedition's 

 vessel, the Bowdoin, sailed from Wiscasset, Maine, on July 16, and from 

 East Booth Bay, Maine, on July 18. Observations were made at 

 Sydney, Nova Scotia, and at Battle Harbor, Labrador, from which 

 point the expedition proceeded north early in August. Important 

 secular-variation data will be obtained at stations en route to the 

 winter-quarters. 



During the Carnegie's stay at San Francisco, California, in February 

 and March 1921, observations were made at Fort Scott and at the 

 repeat station, San Rafael. At Fort Scott also comparisons were made 

 of the ship standard instruments with the Department's sub-standard 

 magnetometer-inductor No. 26 which Mr. Fleming had brought to San 

 Francisco on his inspection trip to the vessel. On Mr. Fleming's 

 return to Washington, magnetometer-inductor No. 26 was compared 

 with the Department's standards, thus insuring effective control of the 

 corrections for the Carnegie instruments and for the valuable series 

 of observatory intercomparisons obtained during the vessel's calls 

 at Christchurch, Honolulu, and Apia. 



