20 



U. SUZUKI. 



III. Pinus Thunbergii. 



(a). Boiled for 30 hours with 2<3%" hydrochloric acid. 

 12.36 g. dry crude proteids (=1.928 g. N) were boiled for 30 

 hours with 20% hydrochloric acid. The extract diluted to 

 400 c.c. 



Solutions 

 used. 



Baryta 

 water 

 replaced. 



Nitrogen 

 found. 



Absolute 

 quantity 

 in total 

 solution. 



Ratio. 



Total nitrogen 



c.c. 



i 10 



254 









1 „ 



2 5-7 



j- 0.0476 



I.902 



100.0 



Nitrogen in copper hydrate 

 precipitate 



1 ;: 



0.5 



i O.00 10 



0.040 







0.6 



2.1 



Nitrogen directly precipitated 



\ " 



9-3 



j- 0.0176 



0.7056 





by phospho-tungstic acid... 





9-7 



37-i 



Nitrogen in phospho-tungstic 





8.8 









precipitate in the filtrate of 



\ : 



8.9 



I 0.0165 



0.6581 



34-6 



copper hydrate 



\ » 



2.0 







Nitrogen in ammonia 



1 » 



2.1 



1 O.OO39 



0.1541 



8.1 



Nitrogen in organic bases ... 



i » 





f ~ 



0.5040 



26.5 



I c.c. baryta water = 0.00186 g. N. 



(b). Boiled with 0.5% hydrochloric acid for 146 hours. 

 7.52 g, dry crude proteids ( = 1. 173 g. N) were boiled with 

 °-5/o hydrochloric acid. The extract diluted to 400 c.c. 



Solutions 

 used. 



Baryta 

 water 

 replaced. 



Nitrogen 

 found. 



Absolute 

 quantity 

 in total 

 solution. 



Ratio 



c.c. 











10 



„ 



15-5 

 IS-6 



j- 0.0289 



1. 156 



100.0 



n 



0.25 

 0.30 



j- 0.0005 



0.0210 



1.8 



" 

 n 



5-95 

 6.00 



j- O.OIII 



0.4451 



38-5 



„ 



5-5 

 5-7 



j- 0.0105 



0.4185 



36.2 





1-3 



i-4 . 



\ 0.0025 



0.0983 



8.5 



» 





i - 



0.3202 



27.7 



Total nitrogen 



Nitrogen in copper hydrate 

 precipitate 



Nitrogen directly precipitated 

 by phospho-tungstic acid... 



Nitrogen in phospho-tungstic 

 precipitate in the filtrate of 

 copper hydrate 



Nitrogen in ammonia 



Nitrogen in organic bases ... 



i c.c. baryta water = 0.00186 g. N. 



