38 



Prof. E. Taylor Jones on Electrical 



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3 4- 5 



^ &7t thousccndtAs of at, second. 



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542-2, 



8827. 



3 4 v 5 



<f in thousandths of a. second. 



582-8, 



905. 



The maximum ordinates of the photographic curves were 

 determined by turning the plate round, so that the zero-line 

 of the curve was at right angles to the cross-wire, and 

 measuring the height of each maximum above each of the 

 two neighbouring minima. If the two latter were not quite 



