110 



Ocean Magnetic Observations, 1905-16 



ISLANDS, PACIFIC OCEAN. 



Society Islands. 



'Local disturbance. 



DESCRIPTIONS OF SHORE STATIONS. 1905-1908. 

 One of the chief difficulties experienced by the observers of the Department 

 of Terrestrial Magnetism in the reoccupation of old stations for secular-variation 

 data has been the lack of information necessary to precise recovery of the point 

 where the previous observations were made. Owing to the frequent occurrence 

 of local disturbances, it may readily happen that erroneous secular-variation data 

 will result from non-recovery of exact station. Accordingly the observers of the 

 Department are instructed to furnish as complete descriptions as possible of 

 stations occupied, especially of such as give promise of future availability. In- 

 formation additional to that contained in the published descriptions or copies of 

 station-sketches or of photographs of surroundings will gladly be given to those 

 interested in the reoccupation of any of the stations. 



The descriptions are given in alphabetical order under the same geographical 

 divisions adopted in the preceding table of shore results. The general form 

 followed in the descriptions is: Name of station, year when occupied, general 

 location, detailed location, distances and references to surrounding objects, manner 

 of marking, and finally the true bearings of prominent objects Ukely to be of 

 permanent character. All bearings, unless specifically stated otherwise, are true 

 ones, and are reckoned continuously from 0° to 360°, in the direction, south, west, 

 north, east. When no mention is made of marking of station, it is to be understood 

 that the station was either not marked at all or not in a permanent manner. 



Most of the measured distances were made originally in the English system; 

 however, the distances obtained by conversion into the metric system are also 



