DEPARTMENT OF TERRESTRIAL MAGNETISM. 263 



once more ''swung" in Falmouth Bay and complete magnetic obser- 

 vations were made over the same place where similar work was done 

 in 1909; the 1909 results were confirmed. 



On October 15, the Carnegie left Falmouth on the last leg of the 

 long cruise begun in June 1910. At the end of the fiscal year she was 

 homeward bound and on December 19, 1913, she arrived at Brooklyn. 



The length of the portion of the entire cruise accomplished during 

 the fiscal year approximates about 30,000 miles. In addition to the 

 shore work, already described above, the ocean work was as follows: 

 The magnetic declination was determined at about 240 points and the 

 magnetic dip and intensity at about 200. Atmospheric electricity 

 observations were made as opportunity permitted, and additional 

 equipment has been provided for this work. The meteorological 

 observations, observations of refraction, and hypsometric observations 

 have been continued as in previous years. Also, a number of special 

 investigations were made covering various questions, the details and 

 results of which must be reserved for the fuller publication. 



The vessel continued throughout the year under the able command 

 of Mr. W. J. Peters. Besides changes of observers already mentioned, 

 Mr. M. Clausen succeeded as first watch officer Mr. Ems Laursen, 

 who resigned when the vessel arrived at Coronel. Mr. Peters refers 

 in appreciative terms to the effective and zealous assistance rendered 

 him by the members of his party. 



In addition to the acknowledgments of cordial assistance received 

 by the Carnegie party which have been made elsewhere, mention 

 should be made of the courtesies extended by the following : Admiral 

 Francisco Neff, of the Talcahuano navy yard; the governor of the 

 Falklands, Hon. W. L. Allerdyce; Mr. Harding, manager of the 

 Falkland Islands Company; the governor of St. Helena, Major H. 

 W. Cordeau; the American consul at Bahia, Mr. D. B. Birch; Messrs. 

 Wilson Lloyd Fox and Ackland, of the Cornwall Polytechnic Society; 

 Mr. J. B. Phillips, of the Falmouth Meteorological Observatory; 

 Mr. Spry, of Falmouth; Dr. W. N. Shaw, director of the London 

 Meteorological Office; and Dr. R. T. Glazebrook, director of the 

 National Physical Laboratory. 



LAND WORK. 



Africa. — During the period November 1 to the middle of Decem- 

 ber 1912, Observer W. H. Sligh was engaged at Algiers in completing 

 the arrangements for the Trans-Saharan Expedition, making mag- 

 netic observations at the Algiers Observatory at Bouzareah, and 

 closing the field-work in his charge. Leaving Algiers December 15, 

 he reported in Washington on January 6, 1913, where he carried out 

 the necessary observations for the comparisons of his instruments 

 with the Department standards. 



