Researches on the Discharge of the Electric Oro-an. 



59 



and 



tan 



Xq = '29 ram., 



6-' = 10 7, 



A = 4 mm. 

 15 



10 



at most, 



wliere tlic value of .I'oaiid oi' /rare detenuined from the first expcri- 

 meiit. From those data we may get 14 mm. as the value of o. 

 Referring to the table, the difference of tlie two apparent modal 

 latent periods in that ex])eriment is equal to 4() mm. So giving 

 full allowance to the effect of o, tlie (hfference needs not be smaller 

 than 2 6 mm. The value cannot be considered to be an error of 

 measurement. 



Oscillogram No. 47 (Plate XXI.) is another example of the 

 same kind, and tlie numbers obtained on this film are tabulated 

 in the next tal)le. 



Tadle XXIV. 



Oscillogram No. 47. 



Temperature of the organ: 8-5 °C, 



Here the modal latent period of the first discharge is toler- 

 ably constant. In the first three, the modal latent period of the 

 second discharge increases a little witli the decrease of the interval 



