PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 169 



Roots 3147 



Stalks 2135 



Leaves . . . . . . . . 4319 



Seed beans . . . . . . 812 



10413 



The total produce per acre at this period amounts to 1487*57 

 lbs., which is divided between leaves, &c, in the following pro- 

 portions : — 



lbs. 



Eoots 449-57 



Stalks 305-00 



Leaves . . . . . . . . 517*00 



Seed beans 116-00 



The separate analysis of these organs gave the subjoined 

 numbers : — 



Eoots. Stalks. Leaves. Beans. 



Water 92-14 86*21 88-21 78-93 



Albuminous compounds 2-18 3'18 4 - 06 ) on. on* 



Other organic matters 4'72 9" 06 6' 54) 



Ash 0-96 1-55 1-19 127 



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

 Nitrogen .. 0-35 0*51 0-69 



The same numbers calculated on the dry matter — ■ 



Albuminous compounds 28'37 23"31 34'36 \ q ,. A . 

 Other organic matters 59 -83 65*29 55-30 j U ° 



Ash 12-30 11-30 10-14 5-95 



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

 Nitrogen . . 4*54 3*73 5 - 53 



From these results the weight in pounds per acre of the dif- 

 ferent constituents of the produce are calculated in the following 

 table : — 



Eoots. Stalks. Leaves. Seed bean?. Total. 



Water 414-23 262-94 544*25 91*09 1312-51 



Albuminous compounds 9 - 80 9 - 69 25'05 ) oo.-i ( 44*54 



Other organic matters 21*22 27'63 40*35 j ' ( 112*91f 



Ash 4-32 4-74 7*35 1-20 17-61 



Nitrogen .. 157 1*55 4*61 7*13 



In examining into the detailed composition of the mineral 

 constituents of the plants, it was found that no results of value 

 could be obtained from the analysis of the ash of the roots ; 

 because, however carefully they were washed, it was impossible 

 to free them .entirely from soil without injuring them. The 



* In consequence of an accident, and failure of material, it was impossible to 

 make a determination of nitrogen in this case, and the whole organic matters aie 

 therefore stated together. 



t This number includes the albuminous compounds of the seed beans, which 

 were not separately determined. Their proportion, however, could not have 

 been large, and the error involved by adding them to tho other organic matters 

 of the entire produce is unimportant. 



