462 



M1YACH1 



I. Peso ilia albiflorct. 

 Total nitrogen in fresh leaves. 



a). 1. 8416 g. of dry matter contained 0.025 12 g. of nitrogen 

 (=I3.4 c cm - baryta water 0 ') equivalent to 1.364%. b). I.84l6g. of 

 dry matter contained 0.02512 g. of nitrogen (=I3.4 CC baryta 

 water) equivalent to 1.364% ; average 1.364%. 



Protein nitrogen in fresh leaves. 



a). 1. 8416 g. of dry matter contained 0.02407 g. of nitrogen 

 (=I2.84 C - 1 - baryta water) = 1.307 %. b). 1.8416 g. of dry matter 

 contained 0.02426 g. of nitrogen (= I2.94 n nn - baryta w ater) 

 = 1-397^. average 1.312%. 



Asparagine nitrogen in fresh leaves. 



a). 4.604 g. of dry matter contained 0.000937 x 2 00 = 0.001 874 g. 

 of nitrogen( = o.5 x 2 = l. c c - baryta water) = 0.0407%. b). 4.604 g. 

 of dry matter contained 0.007490 x 2 = 0.001498 g. of nitrogen 

 ( = 0.4 x 2 = o.8 c c baryta water) = 0.0325%. Average 0.0366%. 



Total nitrogen in starved leaves. 



a). 1.8584 g. of dry matter contained 0.02719 g. of nitrogen 

 (= 14. 5 c r baryta water; = 1.462%. b). 1.8584 g. of dry matter 

 contained 0.02719 g. (= 14.5° 0 baryta water) = 1.462% ; average. 

 1.462%. 



Protein nitrogen in starved leaves. 



a). 1.8584 g. of dry matter contained o.Ol5074g. of nitrogen 

 ( = 8.04 r - 1 ' 1 " baryta water) = 0.81 1%. b). 1.8584 g. of dry matter 

 contained 0.014700 g. ( = 7.84° ' "' baryta water) = 0.790 ; average 

 0.801%. 



Asparagine nitrogen in starved leaves. 



a). 4.646 g. of dry matter contained 0.004875 x 2 = 0.009750 g. 

 of nitrogen ( = 2.6x2 = 5. 2'' 1 '- baryta water) = 0.209%. t>). 4.646g. 

 of dry matter contained 0.004687 x 2 = 0.009374 g. ( = 2.5x2 = 5° 0 

 baryta water) = 0.203% ; average 0.206%. 



II. Then chinensis (a). 

 Total nitrogen in fresh leaves. (Nov. 1895). 



(1) io"- ™>- of the standard sulphuric acid contained O.237548 g. of sulphuric acid and 

 corresponded to 0.067873 g. of nitrogen ; io.<' cm. 0 f the sulphuric acid corresponded to 

 j6.2 c - <■'" of baryta water, ic cm. baryta water = 0.001875 g. of nitrogen. 



(2) A molecule of asparagine contains two atoms of nitrogen and as by boiling it 

 with hydrochloric acid only one atom is split off as ammonia, the result must be doubted. 



