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THE LAST CRUISE OF THE CARNEGIE 



with great accuracy. From this trace the force of gravity at any 

 place could be calculated. 



When the "swinging of the ship" for compass-deviations was 

 completed, the scientific program ashore resolved itself chiefly into 

 magnetic and electric observations at Fort Scott. On board there 

 were instruments to repair, plankton- and bottom-samples to 

 ship to our laboratory, bird-specimens to forward to the National 

 Museum, scientific supplies to stow away, and hydrogen-tanks 



Visitors on the Quarter-deck 

 At the twenty-fifth anniversary celebration in San Francisco. 



to be refilled. However, between these duties we all had oppor- 

 tunities for visiting the various laboratories in California where 

 physical and oceanographic research were carried on — Mount 

 Wilson Observatory, the Scripps Institution at La Jolla, Leland 

 Stanford laboratories at Palo Alto, Coast and Geodetic Survey 

 ships, Hopkins Marine Laboratory at Pacific Grove, and the Uni- 

 versity of California laboratories in Berkeley. 



While we were in San Francisco the Graf Zeppelin arrived from 



