1906.] 



On the Transpiration Current in Plants. 



55 



/• 

 /• 



/ 



30 















i 



/ 















/ 



/ 















/ 















S 

 / 

 / 



! 















> 



/ 

 / 









10 ^ 









/ 



/ 











3 







/ 











.« 



•> 



£ 







/ 

 / 

















/ 



/ 



/' 

















/ 



' 

















.' 

















. c 

 / 



I 

































6 8 /o 



Fig. 3. 



Table V. 



Head. 



Milligrammes 

 transmitted. 



Time. 



Milligrammes per 

 second. 



centimetres. 

 6 

 12 

 18 

 24 

 30 

 36 

 48 



44-0 

 50-0 

 53-0 

 50-0 

 52-0 

 58-0 

 59-5 



seconds. 

 246 

 137 



99 



73 



63 



60 



47 



0-182 

 0-365 

 0-535 

 0-685 

 0-825 

 0-966 

 1-266 



! 



The proportionality of head to flow may be indirectly investigated in another 

 manner. A straight branch fixed in a horizontal position is connected to a 

 large vessel of distilled water. Precautions are taken to clean the connections 



