172 PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



in number and size ; and though the plants had not doubled in 

 height, their weight had increased more than six-fold. The seed 

 bean had disappeared from the roots, with the exception of a few 

 remains too trifling to merit notice. The flowers had begun to 

 make their appearance, and though few were expanded, they 

 and the buds were separated from the plants, and separately- 

 weighed and analysed. One hundred plants weighed in grains — 



Roots, . . . . . . 19,650 



Stalks, .. .. .. 23,400 



Leaves, . . . . . . 21,800 



Flowers, .. .. .. 3,002 



■ * 



67,852 



The total produce per acre is 96928 lbs., which is thus 



distributed among the different parts of the plants : — 



Roots, . . . . 2807-14 



Stalks, . . . . . . 3342-85 



Leaves, .. .. .. 3114-28 



Flowers, . . . . . . 428*57 



9692-84 

 The composition of each of these parts was as follows : — 



Roots. Stalks. Leaves. Flowers. 



Water, .. .. 87*92 86-17 88*94 88*74 



Albuminous compounds, 2'75 3 - 18 4 - 75 4 - 67 



Other organic matters, 8*32 9"08 5*18 5"64 



Ash, .. . . 1-01 1-57 1-13 0-75 



100-00 100-00 100-00 100-00 



Nitrogen, . . . . 0-44 0-51 0-76 0-78 



The same calculated in the dry state gives : — 



Albuminous compounds, 22'75 23*57 37*43 43-43 



Other organic matters, 68'85 65-03 53"32 47-92 



Ash, .. .. 8*40 11*40 10*25 8*65 



100*00 100*00 100*00 100*00 

 Nitrogen, . . . . 3*64 3*74 5*99 6*95 



And the weight in lbs. of the different constituents per acre, 

 calculated from these numbers, is as follows : — 



Roots. Stalks. Leaves. Flowers. Total. 



In the analysis of the ash, in this as in all subsequent stages, 

 the roots were excluded, as it was found quite impossible to 

 separate the particles of soil adhering to them ; and the whole of 

 the flowers on the plants used for analysis did not give a suf- 

 ficient quantity of ash to admit of its being separately examined. 



