Geophysical Institute-Alaska University— Wilson 173 



based on simultaneous photographs with especially constructed 

 cameras located at College, Alaska, and at a point 22.28 km away 

 in a southeasterly direction. Several thousand successful photo- 

 graphs were taken during the period. The visual observations 

 included records of form, color, intensity, direction, extent, 

 and altitude, supplemented by weather conditions and other 

 miscellaneous data. The taking of data was discontinued in 

 December 1934 for reasons of economy. A somewhat closer 

 view of difficulties encountered may be of interest. The early 

 work was under the direction of Veryl R. Fuller, Professor of 

 Physics in the Alaska Agricultural College and School of Mines. 

 Professor Fuller's death occurred before the calculations were 

 completed. George B. Henton continued the computations 

 and constructed network charts for the graphical determination 

 of auroral heights. W. W. Walton assisted with the visual 

 and photographic observations. The calculations were com- 

 pleted by Professor Erwin H. Bramhall, successor to Professor 

 Fuller, with the able assistance of John A. Fleming, Director 

 of the Department of Terrestrial Magnetism of the Carnegie 

 Institution of Washington. The results were included in the 

 Miscellaneous Publications of the University of Alaska, Vol- 

 ume II, entitled "Auroral Research at the University of Alaska 

 1930-1934." This publication gives in considerable detail data, 

 photographs, and graphical organizations of the results to show 

 the number of visible aurorae, their form and extent, their 

 times of occurrence and duration, their distribution by day, 

 month and year. A somewhat brief account is given by Veryl R. 

 Fuller: Auroral Observations at the Alaska Agricultural College 

 and School of Mines for the Year 1930-1931, Terr. Mag. 38, 

 207-238 (1933), 36, 297-308 (1931) and 3 j, 159-166 (1932). 



Other activities during the polar year in Alaska included 

 extensive measurements of magnetic, electrical, meteorological, 

 and ground phenomena at a network of stations, many of 

 which were maintained by volunteer workers. These were 

 integrated with the world wide network. 



