274 CARNEGIE INSTITUTION OF WASHINGTON. 



atmospheric electricity, and earth-currents. The continuous registration of 

 the magnetic fluctuations was begun at the Huancayo Magnetic Observatory 

 in Peru, and the installations for the atmospheric-electric observations are 

 under way. 



Along with the observational work and numerous investigations connected 

 therewith, good progress has been made with the computational and the 

 publication work. During the period of the association with the Depart- 

 ment of Dr. H. U. Sverdrup, in charge of the scientific work of the Amundsen 

 Arctic Expedition, it was possible to complete the reductions of the magnetic 

 observations obtained by the expedition from 1918 to 1921 on the Northeast 

 Passage. A preliminary publication by Messrs. Duvall and Sverdrup of the 

 chief results of this very valuable work has appeared in the March-June 1922 

 issue of Terrestrial Magnetism and Atmospheric Electricity (see pp. 307-308). 



The force of the instrument-shop is still heavily taxed with meeting the 

 varied demands. In consequence, it has not been possible to respond to the 

 numerous requests received, especially from foreign governments, for instru- 

 ments of our design. However, assistance has been rendered to various 

 organizations and makers, at home and abroad, by supplying copies of draw- 

 ings of our instruments and of specifications. 



For abstracts of publications by members of the Division, see pages 283-309. 



The following abstracts from the reports by Mr. Fleming and his chief 

 assistants will give some idea of the extensive work accomplished by the 

 Division of Observational and Administrative Work. 



OCEAN WORK. 1 



Since the completion of the Carnegie's cruise (No. VI) at Washington, on 

 November 10, 1921, the vessel has been out of commission and under the 

 care of Mr. Albert Erickson, first watch-officer. By courtesy of the Com- 

 missioners of the District of Columbia, free use of the old ferry wharf was 

 given until June 15, 1922; since then the Carnegie has been berthed on the 

 south side of the Washington-Colonial Beach Steamboat Company's wharf. 



Certain essential repairs of the auxiliary power plant were made during 

 December and January by Mr. C. E. Leyer, engineer. 



On July 10-11, 1922, as thorough a survey as possible, without placing the 

 vessel in dry-dock, was made by a competent inspector. It was found that 

 dry-rot had developed to such an extent, particularly in the portion not 

 renewed when the vessel was overhauled in 1914, as to require extensive 

 repairs before it will be safe to undertake another lengthy cruise. Late in 

 October the vessel was housed with canvas on wooden, non-magnetic fram- 

 ing to protect her more effectively while she continues out of commission 

 and to reduce the expense of maintenance. 



The closing measurements and comparisons of instrumental appliances, 

 which were required for the final reduction of the ocean observations, were 

 satisfactorily completed. Special tests of some nautical instruments were 

 undertaken, and good progress has been made with the preparation for publi- 

 cation of the final results of the ocean work during the cruises 1915-1921. 



The Carnegie, while in port at Washington, has had many distinguished 

 visitors. 



1 From the report of the chief of the section, J. P. Ault. 



