74 RESPONSE IN THE LIVING AND NON-LIVING 



It will be seen how rapidly chloroform produces depres- 

 sion of response (fig. 44), and how the effect grows with 

 time. In these experiments with plants, the same 

 curious shifting of the zero line is sometimes noticed as 

 in nerve when subjected similarly to the action of re- 

 agents. This is a point of minor importance, the 



* Before f After 



FIG. 44. EFFECT OF CHLOROFOEM ON RESPONSES OF CARROT 

 Stimuli of 25 vibration at intervals of one minute. 



essential point to be noticed being that the responses 

 are rapidly reduced. 



Effects of chloral and formalin. I give below (figs. 

 45, 46) two sets of records, one for the reagent 

 chloral and the other for formalin. The reagents 

 were applied in the form of a solution on the tissue at 

 the two leading contacts, and the contiguous surface. 

 The rhythmic fluctuation in the normal response shown 

 in fig. 45 is interesting. The abrupt decline, within a 



