﻿i66 



BOTANICAL GAZETTE 



[march 



TABLE XV. 



January 15. Test of 



M 



40000 



CuSO^. 



TABLE XVI. 



M 



January 13. Test of "" CUSO4. 



20000 



Time 



8 : 45-10:27 



10 : 27-12 : 27 

 12 - 27- 2 : 15 



M 



2 : 15 CUSO4 



40000 



2:15- 3:15 

 3: 15- 5:27 

 5:27-11 :27 



11 : 27-10 : 32 

 10 : 32- 5 : 02 



5 : 02- 9 : 38 



Experiment 



Time 



0.029 

 0.032 

 0.027 



in exp, bottle 



0.039 

 0.049 



0.051 



0.044 

 0.042 



0.044 



II : 46-1 : 16 

 I ; 16-2 : 28 

 2: 28-3 : 46 

 3 : 46-4 : 52 



Experiment 



4:52 



M 



20000 



0.041 

 0.042 



0.043 

 0.042 



CUSO4 in exp. bottle. 



4:52 



5:52 



7:52 

 9:52 



-5 ^52 



7 :52 



9:52 



9 : 52(l2hrs.) 



0.073 



0.067 



0.072 



0.062 



TABLE XVIL 



December 19. Test of 



M 



lOOOO 



CUSO4 



The record in table XV is given for the entire period of 

 observation. It should be said that from most of the tables 



both ends have been omitted, the 

 published record covering the time 

 more immediately before and after 

 poisoning. 



Table XVI shows less CO^ was 

 evolved toward the end of the 

 experiment, but the material re- 

 mained alive. 



The plants were left in water 

 over night; but few cells were 



Time 



Experiment 



11:38-2:44 



M 



2 : 44 CuSO 



lOOOO 



2 : 44-3 : 44 



0.034 

 in exp. bottle 



O.IOO 



Exc, CO3 in water of exp. bot tie . 1 



Total COo 0. no 



alive the next morning. 



TABLE XVIIL 



M M 



December 20. Test of and CuSO^, there being no control. 



5000 



2000 



Time 



Experiment A 



Experiment B 



10:00-2: 12 



2 : 12 



M 



5000 



CUSO4 



2:12-3 • 12 



Total CO 



0,040 

 in exp. A bottle. 



0.275 



M 



2000 



a 



0.320 



0.038 

 in exp.B bottle 



0.335 



0.435 



The COg was driven from both bottles, and the estimated content at the begin 

 ning of the hour subtracted ; the remainder added to that found by titration. 



