PROPOSED MAGNETIC SURVEY OF NORTH PACIFIC OCEAN. 273 



I fully concur. I have evidence that the large secular change in 

 the magnetic declination which has been going on for the last sixty- 

 years in the ocean area between New Zealand and Cape Horn (south 

 of 30° S.) is still in progress and wants far more attention than has 

 hitherto been accorded to it. 

 Yours very truly, 



Ettrick W. Creak. 



[Formerly superintendent of the compass department, British Admiralty. 

 Now retired.] 



\Lcttcrfrom 0. H. Tittma7in, Superintendent U. S. Coast and Geodetic 



Survey^ to Dr. Bauer. ~\ 



* 



Washington, October i, igo^. 



Dr. ly. A. Bauer, 



Director Department of International Research in 



Terrestrial Magnetism, Carnegie Institution. 



Dear Sir : Your note, submitting a plan for a magnetic survey 

 of the North Pacific, together with letters from Mr. I^ittlehales and 

 Captain Creak, is before me. 



There is no doubt in my mind that a survey for that purpose 

 would result in obtaining data of great and permanent value, and 

 that it should be undertaken. 



You have pointed out that the scheme of traversing the Pacific by 

 a spiral route is one that can be interrupted at any time. ValuabU 

 results are sure to be obtained in even a partial circuit, and therefore 

 there is no danger of waste of funds through failure. 



My own estimate of the time required to cover the field in the 

 manner proposed is three years. 

 Yours truly, 



O. H. TiTTMANN. 



