NATURE OF THE ELECTRIC DISCHARGE. 

 Francis E. Niphee. 



In the former paper, published as No. 4 of Vol. XIX, 

 a reference to Figs. B and C of Plate XXV was made 

 on pp. 67-8. The arrangement of the circuit was as 

 shown in Fig. 2, p. 64, the copper plate having been 

 removed. Fig. 2 is here reproduced as Fig. 1, for fur- 

 ther reference. 



LIBRARY 

 NEW YORK 

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liAWDtiN. 



The suggestion made in the former paper that oscilla- 

 tions played an important part in determining such 

 changes in form as are represented in Figs. B and C has 

 been given additional attention. Incidentally the effect 

 of such oscillations in promoting discharge is illustrated, 

 although this is a phenomenon which has long been 

 known. 



Continued from Nos. 1 and 4, Vol. XIX. Presented before the Acad- 

 emy of Science of St. Louis, January 16th, 1911. 



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