174 



Land Magnetic Observations, 1914-20 



never been traversed by a motor-car before, and were not suited to that form of trans- 

 port. The consequent wear on machinery and tires was excessive. The loss in dis- 

 posing of the car was greater than had been estimated on account of the depression pro- 

 duced by the European war. The field-expense per station for the 36 stations was a 

 little less than $50; the total distance traveled, including going to and returning from 

 the field, was about 7,500 miles, of which more than 4,000 was by motor-car. 



Table 25 shows the stations at which magnetic observations were made, with date 

 of occupation, and geographic position; for values of the magnetic elements, see Table 



of Results. 



Table 25. 



W. C. Parkinson, on Magnetic Work in the Islands of the Pacific Ocean, January to 



December 1915. 



The work outlined for 1915 according to instructions of the Director, dated Decem- 

 ber 16, 1914, and supplemented by instructions of July 2, 1915, consisted in a series of 

 expeditions to various island groups in the south Pacific. As carried out, the work may 

 be divided into the following subdivisions : 



I. Jan. to Mar., New Caledonia, New Hebrides, and adjacent islands. 



II. Apr. to Aug., Fiji, Samoa, Gilbert, and adjacent groups. 



III. Aug. 31 to Oct., Solomon Islands. 



IV. Oct. to Dec, New Guinea and neighboring islands. 



