490 ■ U. SUZUKI. 



Total dry weight of lOO shoots : — 



Plants treated with N^NOs until the 14th I -365 g. 



Plants kept in 10% sugar solution from the 14th to 



the 2 1st 1.650 g. 



Increase of dry matter during experiment 0.285 g.=:2i^. 



IX 100 PARTS OK DRY MATTER. 





Plants treated with nitrate. 



Before nourishment 

 with sugar (a) 



After nourishment 

 ■with sugar (b) 



Total nitrogen 



4.22 



3 S3 



Albuminoid nitrogen 



1. 85 



1. 8s 





1.26 



1. 00 



Nitrates nitrogen 



0.32 



0 



Other nitrogen 



0.79 



0.68 



Proteids (Alb. Nx 6.25) 



11.56 



11.56 



Asparagine (water free) 



5-94 



471 



As the plants kept in the sugar solution increased very much 

 in dry matter, the percentage of nitro;.:en is lower, and no inference 

 as to the formation of proteids can directly be drawn from these 

 numbers. Therefore we have to recalculate the numbers with 

 reference to the total amount of nitrogen, and also the absolute 

 amount of nitrogen contained in every 100 shoots. 



IN 100 PARTS OF TOTAL NITROGEN :— 





(a) 



(b) 





44.00 



52.40 





30.00 



28.30 



Nitrates nitrogen 



8.00 



0 



Other nitrogen 



18.00 



19.30 



