[Vol. 2 



560 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



ment. "We can thus account for the fact that the increase in 

 the conductivity of the medium in Nos. 34, 35, and 36, was 

 so slight and so similar to that given by the controls. It will 

 be seen that the anesthetics did not antagonize the salts so far 

 as exosmosis of electrolytes is concerned. The condition of 

 the plants after the 53-hour treatment is shown in table xn. 



TABLE XII 



CONDITION OF PLANTS FIFTY-THREE HOURS AFTER TREATMENT WITH 



SOLUTIONS OF SALTS AND ANESTHETICS 



Culture no. 



31 

 32 



33 



34 

 35 

 36 



37 



38 

 39 



40 

 41 

 42 

 43 

 44 

 45 

 46-50 



Condition of tops 



Normal 



Practically normal 



Subnormal, drying considerably. . . 



Normal 



Normal 



Almost normal 



Practically normal 



Almost normal 



Drying considerably 



Normal 



Drying somewhat 



Drying considerably 



Practically normal 



Drying considerably 



Drying badly 



Normal 



Condition of roots 



Yellowish brown, somewhat 



flaccid 

 Slightly yellow, practically 



normal 

 Slightly yellow, practically 



normal 

 Practically normal 

 White, but considerably flaccid 



Very flaccid 



Yellowish and considerably 



flaccid 

 Somewhat flaccid 

 Very flaccid 

 Almost normal 

 Considerably flaccid 

 Very flaccid 

 Practically normal 

 Considerably flaccid 

 Very flaccid 

 Practically normal 



The concentration of the anesthetics used in the above ex- 

 periments was near the boundary which would just produce 

 exosmosis. To eliminate such action entirely when these sub- 



used 



therefore, the concentrations used 



reduced to a point below that at which they 



mosis 



iable extent, if at all. The results of 1 

 table xiii. where we see aerain no ind 



that there is any decreasing effect by the 



exomosis induced 



On the contrary, the combined 



and anesthetic cause a greater exosmosis than 



alone. 



As measured by the resulting growth of roots, Hibbard ( '13) 

 found an antagonistic action between CuS04 and chloral 

 hydrate. To determine if such action would also hold true in 



