Observers' Field Reports 



161 



Table 22 shows the magnetic stations, dates of occupation, and geographic positions; 

 for magnetic elements, see Table of Results. 



We left Farina April 13 and arrived at Hergott July 2. The average field time per 

 station (22 stations) was 3.7 days. The average cost per station was $27.07. 



The great part of the area traversed is a lower and upper cretaceous deposit of sand, 

 sandstone, quartzite, jasper, etc. There are extensive areas of land covered with desert- 

 sandstone boulders, locally known as "gibbers," which consist mainly of sandstone 

 indurated by siliceous infiltrations. Most of the "gibbers" are red, coated with oxides 

 of iron, the outcome of arid conditions. These oxides apparently have little effect on 

 the magnetic conditions. 



Mr. F. Budge of Farina, representing J. W. Manfield and Company, rendered great 

 assistance in planning the journey. Mr. W. N. Johnston, manager of Patchawarra 

 Bore, helped in every way possible to recover the 5 lost camels. 



A. L. Kennedy, on Magnetic Work in South Australia and Western Australia, August 



to October 1914. 



Preparations were made for a camel expedition from Port Augusta to Kalgoorlie, 

 according to instructions from my chief of party, Mr. E. Kidson, dated April 2, 1914. 

 Excepting the substitution of Kew dip circle No. 177 for the Barrow No. 41, the same 

 instrumental outfit was taken as was used in my expedition in South Australia, April 

 to July 1914. 



After having made all arrangements to obtain 12 camels, 1 riding saddle, 9 pack 

 saddles, 4 eighteen-gallon water-kegs, 2 boxes, etc., from the Engineer-in-Chief of South 

 Australia, I engaged Tom Dare as camel driver, and sent him from Adelaide to the 

 Government Depot at Hergott Springs on July 17 to receive the camels from Mr. J. G. 

 Macdonald, in charge of the depot, and drive them to Port Augusta. I left Adelaide 

 August 4, going direct to Port Augusta, where I reoccupied the magnetic station pre- 

 viously established by Government Astronomer G. F. Dodwell, of South Australia. 



