﻿Potential Fluctuations Daring Snowstorm, March 5 and 6, 1890. 



Time. 



Potential in volts. 



Positive. Xeo:ative. 



Time. 



Potential in volts. 



Positive. Negative. 



5:30 p. 



40 

 6:00 



05 



10 

 9:00 a. 



30 



40 



42 



43 



44 



45 



47 



48 



49 



50 



51 



52 



53 



54 



55 



57 



58 



59 

 10:00 a. 



01 



02 



03 



04 



05 



06 



07 



08 



09 



10 



13:30 



14 



16:30 



17 



18 



18:15 



19 



19:30 



20 



21 



22:30 



23 



24 



25 



26 



27 



27:30 



28 



29 



30 



31 



31:30 



32 



33 



34 



m . . . 70 

 70 



....: 70 



. . . ! 45 





.... 











...1 37 





m 



25 

 312 

 250 



















75 





125 

 250 

 125 



















200 



150 



250 



100 



250 



275 



325 



350 



212-275 



250 



150 



275 



200 



225 



275 



312 



287 



200 



250 



210 















































m 





































162 

 170 

 100 















25 



105 













300 









187-250 

 45 







75 



8 













188 

 125 

 115 

 50 

 90 

 95 

 50 

 50 







































































160 

 175 





















250 









100 









80 







20 







20 







100 

 150 















15 



10:35 a. r 



36 



37 



38 



39 



40 



50 



51 



52 



53 



54 



55 



56 



57 



57:30 

 45 



58 



59 

 11:00 a. I 



01 



02 



03 



04 



05 



10 

 10: 

 11 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 to 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 50 

 12:05a.m.. . 

 15 

 25 

 30 



45 .... 

 55 

 2:30 p.m.... 

 35 

 40 



/O 



110 

 250 

 500 



60 

 65 

 250 

 85 

 157 

 157 

 275 

 200 

 300 

 150 



... 



500 

 250 

 162 

 182 



10 



75 



Over 575 off 



continued 



100 



115 







































— 



200 

 175 































50 



scale and 

 so until — 



Off scale neg. 

 Off scale neg. 



300 



450 



475 



275 



275 



Off scale neg. 



225 

 150 



15 



65 



56 



60 



80 



65 



80 



190 



137 



170 



207 



185 



237 



195 



140 

 175 

 157 



