256 CARNEGIE INSTITUTION OF WASHINGTON. 



instance is cited under "Details of the Ocean Work" showing that, 

 with the refined appHances and methods in use on the Carnegie, 

 rehable data for correcting the charts can be obtained in a com- 

 paratively brief interval. 



It is hoped, by the end of next year, to issue a complete report 

 containing the results of all the scientific work accomplished on the 

 oceans by the Galilee and Carnegie. 



MAGNETIC SURVEY OF LAND AREAS. 



During the present fiscal year there have been several noteworthy 

 land expeditions, all of which were accomplished by the respective 

 leaders with entire success. Thus Observer D. W. Berky, assisted 

 by Observer H. E. Sawyer, completed a trip across the Sahara 

 Desert, leaving Algiers at the end of October 1912 and arriving at 

 Timbuktoo on May 12, 1913. This may have been the first Ameri- 

 can party to make this trip. Every possible courtesy and assistance 

 was rendered by the French officials. Messrs. Berky and Sawyer 

 next extended their magnetic survey into the countries of West and 

 Central Africa bordering on the Atlantic Coast. 



Dr. H. M. W. Edmonds, magnetician, assisted by Observer D. M. 

 Wise, from May to October, explored the region of Canada to the 

 west of James Bay and Hudson Bay, of special interest because of 

 the fact that one of the foci or areas where the intensity of the 

 Earth's magnetic field is a maximum is located here. The canoe 

 route which had to be traversed approximated about 2,000 miles, 

 of which over 500 miles was over an unsheltered, open coast. 



Observer A. D. Power not only has completed a valuable series 

 of magnetic stations in northern Venezuela, but had accomplished 

 safely also, by the middle of August, the important trip along the 

 Orinoco River and Rio Negro, from the mouth of the Orinoco to 

 Manaos, on the Amazon. During the remainder of the fiscal year 

 he was engaged in carrying out an expedition from Manaos to the 

 boundary of British Guiana, via the Rio Negro and Rio Branco. 

 He succeeded in penetrating into British Guiana and connecting 

 with our 1908 series of stations as far as Georgetown. 



Observer H. F. Johnston, after having been relieved of ocean duty 

 at Bahia, Brazil, last May, undertook to push northward in South 

 America a series of stations from Montevideo, Uruguay, along the 

 Parana, the Paraguay, and Madeira Rivers to the Amazon at Manaos. 

 By the end of October he had completed his expedition as far as 

 Asuncion, Paraguay. 



Thus, before long we shall have, in addition to the chain of mag- 

 netic stations already extending completely across South America, 



