180 



PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



As regards nitrogen, also, almost the whole of that absorbed 

 has gone to the pods, the increase in the stalks and leaves being- 

 only 6 lbs., while in the pods 19 71 lbs. has been accumulated. 



5th Stage, 7th October, 1864. 



Owing to the state of the weather at the beginning of Octo- 

 ber, it was found inadvisable to take a sample of this stage, 

 until the. 7th of the month, and the plants then showed a striking 

 change. Their height had increased from 43 to 48 inches on 

 the average, but their weight had diminished, partly owing to 

 the reduced per centage of water, but more especially to the 

 decay of the leaves, som- of which had become quite black and 

 shrivelled. The pods, however, as might be expected, had 

 made great progress, their weight being between thirteen and 

 fourteen times as great as it was on the 1st September. The 

 beans had now attained some size, and an attempt was made to 

 separate them from the pods for analysis, but it had to be aban- 

 doned, as it was found impossible to obtain a sufficient quantity 

 for the purpose. 



The weight of a hundred plants was in grains — 



Roots, 

 Stalks, 



Leaves, 

 Pods, 



Giving for the weight in lbs. per acre — 



26,880 



143,000 



28,400 



76,100 



275,040 



Roots, 

 Stalks, 

 Leaves, 

 Pods, 



3840-00 

 20,514-30 



4057-14 

 10,880-00 



39,291-44 



From the analysis of each of these portions, the following 

 results were obtained : — 



Roots. Starks. 



Water, .... 78'51 84-26 



Albuminous compounds, . . 2 - 81 1*31 



Other organic matters, . . 17 "80 13'89 



Ash, .... 0.88 0-54 



Nitrogen, 



Calculated dry — 



Albuminous compounds, 

 Other organic matters, 

 Ash, 



100-00 

 0.45 



Roots. 



13-37 



82-53 



4-10 



100-00 

 0-21 



Stalks. 



8-68 

 87-87 



3-45 



Leaves. 



84-48 

 5 - 37 

 7-63 

 2*52 



100-00 

 0-86 



Leaves. 

 34-81 

 48-94 

 16-25 



Pods. 



79-27 

 5.12 



14-72 

 0-89 



100-00 

 0-82 



Pods. 

 24-06 

 71-64 



4-30 



Nitrogen, 



2-14 



1-39 



O'OI 



3-85 



