352 



APPENDIX E. 



I. Section = 80 cent. cub. distilled water 

 II. " = 350 " " 



III. " = 570 



1000 cent. cub. = 1 litre 



The residue from each section = 300 cent, cub., were united 

 and analysed. 



ABC 

 Nitric acid .................. 1-2960 ? ? 



Sulphuric acid .............. 0-2970 0-1240 0'1730 



Phosphoric acid ............. 0-0750 O'OOOO 0-0750 



Lime ....................... 0-4104 0-1480 0'2624 



Magnesia ................... 0-1398 0-0640 0'0758 



Potash .............. ....... 0-6131 0'2280 0'3851 



2-8313 



0'5640 



0'9713 



In the first of the following lines are placed the proportions of 

 the matters given to the plants, calculated from column A ; in the 

 second, the calculations are made from column o : 



Absorbed: 



OaO 



MgO 



KO 



S0 3 



OaO 



MgO 



II. Period. From June 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. 



A 



Nitric acid 1-0800 



Sulphuric acid 0*2475 



Phosphoric acid 0-0625 



Lime 0*3420 



Magnesia 0*1165 



Potash 0-5110 



2-3595 



Proportions of bases and acids, 

 CaO KO 



B 



? 



0-1704 

 0*0000 

 0*1912 

 0*0860 

 0*3120 



0-7596 



C 



? 



0-0771 

 0-0625 

 0*1508 

 0*0305 

 0-1990 



0*5199 



Absorbed: 



MgO 



= 5-0; 

 ' 



CaO 



MgO 



= a . B 



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

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



