444 Mrs. A. M. Waller. On the " Blaze-currents " [Dec. 1 , 



Envelope of Gall Bladder (July 21). 

 5000 - = - 0-0010 (from mucous to serous) 



+ = 

 5000 + 



-0-0020 



Serous. Mucous. 



10000 



-0-0018 

 -0-0018 



- a trace 

 -0-0002 



+ 0-0002 

 -0-0012 

 + 0-0002 

 + 0-0008 



5000 



nil 



-0-0020 



Slice of Gall Bladder (July 14). 



Coil at 5000 - = + off scale 



+ +0-0008 



10000+ = -0-0009 +0-0008 



= +0-0045 



+ -0-0011 +0-0003 



In this experiment the envelope was placed so that the + or positive 

 deflection signified a blaze from mucous to serous surfaces. In the 

 five cases given the first is a large effect in the usual antidrome direction, 

 being an addition of the mucous to serous blaze to the negative 

 polarisation characteristic of this tissue, the second is the mucous to 

 serous effect without negative polarisation, the third stimulation being 

 stronger brings out a negative polarisation effect (presumably from the 

 smooth muscle fibres), and then the positive effect from mucous to 

 serous. The last strong stimulation brings out a negative plus the 

 positive effect as in the first case. 



