POISONOUS ACTION OF POTASSIUM PERSULPHATE. 417 











d) do 



ON 



n 0 



O 



3 3 







on 





ft 





V 





a. 





q" 

 a. 





0 







>o 



0- H 

 C 0. 

 — a. 



p s 

 1/1 < 



o » 

 3 S 

 >s= 



— p 



£2 



/Potassium | 

 sulphate .. „ 



Control h 



, Water 



Potassium persulphate ] 







o_ 0 

 — to 



r P 



to Oi 



o_ 0 



Co .p* 

 Or 0 



°, 0 



— M 

 <1 O 



On m 



0 24.4 1 

 0' 10.9 1 



0 19.1 ] 

 0' 14.2 

 0" 9.3 (2) ] 



0 20.5 1 

 0' 16.9(1)! 



At the beginni 

 (March 16) 

 individual leav 

 cm. 



r 



re 

 3 



TO 





ro 

 Co 

 it 



Oo 



"on 



; 35-3 



to 



ON 



00 

 ^1 



4* 



in TO 



h of Plants. 



5 



Cn 



OJ 



00 

 bo 



o> 



CO 



b 



454 



4> 

 to 



*° 



00 

 b 



After 10 days 

 (March 26) 

 Summed up 



00 



be 



O 

 -f»- 



„ 



0 



u 



0 



1 



ON 



0 



On 



Absolute 

 cm. 



Increase. 



to 

 bo 



ON 



b\ 



to 

 -4 



to 



CO 

 On 



1 



On 



Relative 



0 dead 

 0' 30.0 

 n 37.0 



0 dead j 

 0' 30.0 

 n 35-5 ' 



=_ 3 q_ 0 

 &* 



cor P 2 



3_ 3 0^ O 

 KU h 



O ON-f*. ^1 



On On to O 



3 Q,q_o 



O I O.O 



0' dead | 



n 23.6 



n' 8.0 ' 



23 days after 1 

 nourishment (Ap 

 individual lea' 

 cm. 



Length of Pla 



On 



b 



On 

 On 



1 



■ 80.6 

 1 



CO 



to 



ON 



On 



ON^ 



x „ 

 00 





to 

 ON 

 di 



to 

 ON 

 it 



10 

 ON 



bo 



1 



On 



Ul 



On 



Absolute 

 cm. 



Increase. 



On 



i. 



68.8 





to 



1 



NO 

 On 



Relative 



