154 Land Magnetic Observations, 1914-20 



tude, and magnetic observations were made on these journeys as opportunities permitted. 

 Late in 1915 he established 4 stations at points northeast of Adelaide, and in May 1916 

 two more, Border Town and Naracoorte, the former being a proximate reoccupation of 

 the C. I. W. stations of 1911 and 1914. In the 1915 stations Dover dip circle No. 226 

 was substituted for Barrow No. 38; at the two 1916 stations mentioned Professor Kerr 

 Grant, of the Adelaide University, and Mr. R. S. Burdon assisted in making the observa- 

 tions. Later, in September of the same year, 3 stations were occupied near the head of 

 Spencer Gulf, while the last 9 stations of the series were occupied in connectoin with 

 latitude and longitude work in the extreme southeast portion of the state near the Victoria 

 boundary. Professor Grant also assisted in this last series of observations. In Table 20 

 (see p. 153) the names and geographic positions of stations occupied in years 1914 to 

 1918 are given; for magnetic elements, see Table of Results. 



C. K. Edmunds, on Magnetic Work in China, January 1915 to July 1917. 



In November 1914, plans for expeditions in western China were approved and 

 authorization for alterations and extensions of these plans was made from time to time 

 by written or cabled correspondence with the Director as occasion arose. In the execu- 

 tion of this work, Mr. Frederick Brown was assigned at the conclusion of the Australian 

 campaign to work under my supervision as chief of party. He continued under this 

 arrangement until July 1917, after which he reported directly to Washington. 



Mr. Brown arrived at Canton on January 13, 1915, and intercomparisons of the 

 instruments brought by him with those used by me in recent work were at once begun. 

 These included full determinations of instrument and station-differences for magnet- 

 ometers Nos. 12 and 17, 12 and 9, and dip circles Nos. 206 and 177, 206 and 172, and 172 

 and 177. The station-difference was determined not only between the new hut-stations, 

 A, and B on the grounds of the Canton Christian College, but also between the former 

 hill station, Canton 3, and hut station, A,. Magnetometer No. 17 was returned to 

 Washington on completion of its comparison with No. 12. Mr. Brown's remaining 

 magnetometer No. 9 and dip circle No. 177 were then compared with the instruments 

 of the Royal Observatory, Hongkong, through the courtesy of T. F. Claxton, Director. 

 These comparisons occupied from January 13 to March 20. On March 23, Mr. Brown 

 accompanied by Mr. N. K. Ip and a cook, left Canton for a trip through the four 

 provinces, Kwangtung, Hunan, Kweichow, and Kwangsi, and on his return in July a 

 further and full intercomparison of magnetometers Nos. 12 and 9 was carried out. 

 During his absence, I had completed plans for the future work of the two parties, and 

 at intervals during January to July, inclusive, had made a number of full daylight 

 periods of diurnal-variation observations in declination. 



During August the parties were transferred north, and while en route to Peking 

 they observed at 6 or 7 places that fill gaps left in former campaigns. This report covers 

 in detail only the field work executed by myself; that done by Mr. F. Brown is covered 

 by his own separate reports. My instrumental equipment consisted of the following: 

 theodolite-magnetometer No. 12, with thermometers; dip circle No. 206, with compass 

 attachment, dip needles Nos. 1 and 2 of dip circle No. 206, Nos. 5 and 6 of dip circle 

 No. 178, and intensity needles Nos. 3 and 4 of dip circle No. 206; Glover box chro- 

 nometer No. 558 (not used after December 22, stolen by armed bandits February 20, 1916) ; 

 2 pocket chronometers; 4 watches; hypsometer with thermometers; aneroid barometer; 

 vest-pocket and Graflex cameras; observing tent and its accessories. 



From Shanghai, where Mr. Brown, accompanied by Mr. Ip, left me for a detour 

 in Shantung by boat down the Yellow River and back by cart to the railroad, after a 

 day devoted to official correspondence and arrangements, I proceeded by rail direct to 

 Tientsin, arriving August 11, midnight. August 12 was devoted to arranging for the 



