Contributions to the Physiological Knowledge of 

 The Tea Plant, 



BY 



U. Suzuki. 



I. Is theine contained in the seeds of the tea plant ? 



There can hardly be any doubt, that the production of 

 theine takes place in the tea plant in the green leaves, but as 

 to the presence of theine in other organs and its variation under 

 different influences, but little is known. Kellner examined the 

 seeds and his conclusion that the seeds are free from theine 

 agrees well with my recent investigation. Theine therefore does 

 not follow the current of other nitrogenous compounds, as 

 asparagin, tyrosin, leucin, probably for the reason that it is not 

 changed in the seeds into other compounds. 



I have subjected the seeds to a complete analysis which 

 yielded results very similar to those of Kellner. 



i. Composition of the seed. 



The seed was 



shelled, dried, pub 



•erized and 



analyzed. 



In 100 parts of dry matter. 





In 100 parts of ash. 





Suzuki. 



Kellner.O) 





(including C0 2 ) 



Crude protein. 



IC.68 



1 1. CO 



Si 0 2 



O.IO 



Crude fat. 



32.70 



3741 



S0 3 



3-66 



Crude fibre. 



5.90 



2.80 



p 2 o 3 



15.48 



Total carbohydrates. 



31.00 





K 2 O 



4 1 63 



Crude ash. 



3-30 



2.90 



Na 2 O 



I.67 



Nitrogen free extract. 



47.42 



45-89 



Fe 2 O a 



2.00 



Total nitrogen. 



1. 71 



'•73 



CaO 



7.50 



Albuminoid nitrogen. 



1.48 



I.50 



Mg 0 



9.80 



Non-albuminoid nitrogen. 0.23 



0.23 







(1) Kellner ;— Bull. Agric. Coll. Tokyo, Komaba. Vol I. 



