376 



APPENDIX E. 



11. Period. From Jane 12 to July 20. — At the commence- 

 ment the plant weighed 65 grammes, and had nine leaves with 

 a surface of 648 square centimetres ; water exhaled = 1 litre ; the 

 plant received O'l gramme of phosphate of iron suspended in 

 the water about the roots, the roots became of a reddish yellow 

 colour. 



0-7596 



Proportions of bases and acids, — • 

 CaO 



Griven : 



MgO 



CaO 



MgO 



:2-l 



Ai 1. ^ CaO . ^ KO , ^ SO, ^ . 



Absorbed: =5*0 ; - — = 1-3: L=2-5 



MgO ' CaO MgO 



III. Period. From July 20 to 27. — At the commencement 

 the plant weighed 73 grammes, and had eleven leaves with a 

 surface of 720 square centimetres ; water exhaled = 1 litre ; 

 to the solution was added 0*1 gramme of phosphate of iron; 

 radication strong. This period differs from the preceding in the 

 quantity of KOPOg given being double. 



Proportions of bases and acids, — 

 CaO ,-, r. KO 



Given : 



2-9:41^=1.5 

 MgO CaO 



SO3 

 MgO 



SO, 



Absorbed: g^=6-l; ^=1-7;-^:^ 

 MgO CaO ' MgO 



= 2-1 



;2'4 



