200 REPORTS ON INVESTIGATIONS AND PROJECTS. 



years under the charge of the President of the Canton Christian College, 

 who has already conducted magnetic work in China for the Department in 

 the years 1905 to 1908, as per previous reports. The plans as contemplated, 

 in connection with the work already completed by Department observers, 

 provide for the completion of a general magnetic survey of the Chinese 

 Empire. During September Dr. Edmunds made at Washington a series of 

 complete standardization observations for the instrumental outfit to be used 

 by him. 



Canada. — During August to October the Department has cooperated with 

 the expedition of Professors Raymond McFarland, T. C. Brown, and 

 P. N. Swett, of Middlebury College, Middlebury, Vermont, from Lake St. 

 John to Lake Mistassinni and return. The magnetic observations have been 

 made by Professor Swett and 6 stations have been occupied. During June 

 and July Professor Swett made complete standardization observations of the 

 instrumental outfit at Washington and occupied a repeat station at Middle- 

 bury. 



It has again been the good fortune of the Department to be able to co- 

 operate in instrumental matters with Prof. R. F. Stupart, Director of the 

 Meteorological Service of Canada, who has sent an observer to obtain mag- 

 netic data along the Mackenzie River. 



Turkey and Arabia. — Mr. J. C. Pearson, Magnetic Observer, continued 

 work in Turkey until relieved in January by Mr. W. H. Sligh, Magnetic 

 Observer. Mr. Pearson, after securing observations during November 1909, 

 at 3 stations along the southern coast of the Black Sea in Turkey in Asia, 

 proceeded to Constantinople. After complete intercomparisons of instru- 

 ments had been made at the magnetic station, Robert College (near Constan- 

 tinople), Mr. Sligh took up operations in Palestine, Syria, Arabia, Mesopo- 

 tamia, and the islands of Rhodes and Cyprus. Up to the end of July he 

 had established 44 stations. In August Mr. Sligh left Constantinople over- 

 land for Bagdad and Busra, which latter point he will probably reach early 

 in January 191 1. During August to October about 25 stations will be occu- 

 pied. This work and that by Mr. Pearson will practically complete a general 

 magnetic survey of Asia Minor and Persia, as well as a part of Arabia. 



Austria, England, and Germany. — Upon completion of the work at Con- 

 stantinople Mr. Pearson made intercomparisons of standards at the magnetic 

 observatories, Pola (Austria), Potsdam (Germany), Kew (England), and 

 Cheltenham (United States), thus completing a very valuable series of inter- 

 comparisons of standards ; in his previous work he had made similar obser- 

 vations at Kew, Helwan (Egypt), Tiflis (Transcaucasia), Tashkent (Rus- 

 sian Turkestan), and Cheltenham. Acknowledgment must be made of the 

 very cordial assistance rendered the Department in the execution of this 

 work by the Directors of the various observatories as well as by their assist- 

 ants. Those in charge were Mr. B. F. E. Keeling, Helwan ; Dr. Charles Chree, 

 Kew; Dr. M. Ossipov, Tashkent; Dr. Stephen v. Hlasek, Tiflis; Dr. Adolf 



