A CONTRIBUTION TO THE KNOWLEDGE OF ARGININ. 0 



containing o.i^K.HPO,, KH 2 P0 4> MgSO< and trace of FeCl 3 , 

 and CaS0 4 to half saturation, was added. After twenty one 

 days, the shoots were 36cm. high, with many green open leaves, 

 the diameter of which was on the average 5cm. This second 

 portion was then removed from the sand, washed, dried and 

 analyzed. 



a). Etiolated shoots of (so many days) growth. 



In 100 parts of dry matter. 



Total nitrogen. 3.00 100.0 



Albuminoid nitrogen. 1. 44 4S.0 



Asparagine nitrogen. 0.48 16.0 



Nitrogen in phospho-tungstic 



precipitate. 0.14 4.7 



Other nitrogen. 0.94 31.3 



Every 100 shoots contain : — 



Total nitrogen. °«5775 



Albuminoid nitrogen. 0.2772 



Asparagine nitrogen. 0.0924 



Nitrogen in phospho-tungstic precipitate. 0.0270 



Other nitrogen. o. 1809 



b). Etiolated shoots of (so many days) growth exposed to 

 day-light for the last 3 weeks. 



In 100 parts of dry matter. 



Total nitrogen. 2.97 ioo.o 



Albuminoid nitrogen. 1.99 67.0 



Asparagine nitrogen. 0.30 10.1 



Nitrogen in phospho-tungstic 



precipitate. 0.16 5.4 



Other nitrogen. 0.52 17.5 



Every 100 shoots contain : — 10 



Total nitrogen. 1-1234 

 Albuminoid nitrogen. °-7393 



(1) The increase of the absolute quantity of nitrogen in the shoots of b) was clue to 

 the migration of the reserve materials from the seeds to the shoots. 



