s 



U. SUZUKI. 



II. Organic bases especially arginin in the shools 

 of coniferous plants. 



r. Cryptomeria japonica. 



Since E. Schulze found much organic bases especially 

 arginin in the shoots of Picea excelsa, Abies pectinata and Pinus 

 sylvestris, it is naturally to be expected that the shoots of other 

 Coniferae also contain the same substance. 



Seeds of Cryptomeria japonica were sown in the purified 

 sea sand and kept in the dark in a warm house, where the tem- 

 perature ranged between I5°C and 35°C. After one month they 

 began to germinate and after three weeks more, the shoots were 

 6. -7cm. high. Hereupon they were removed from the sand, 



washed well, dried and analyzed : — 



a). In 100 parts of dry matter. 



Total nitrogen. 7.77 100.0 



Albuminoid nitrogen. 3.82 49.2 



Asparagine nitrogen. 0.56 7.2 



Nitrogen in phospho-tungstic 



precipitate. 1.65 21.2 



Other nitrogen. 1.74 22.4 



b). Another sample gave : — 



Albuminoid nitrogen. 3.77 



Nitrogen in phospho-tungstic precipitate. 1.44 



We see here that nearly \ of the total nitrogen in the shoots 

 belongs to the phospho-tungstic precipitate. 



2. GlNGKO BILOBA. 



Seeds of Gingko biloba were sown in the purified sea sand 

 and kept in the dark in a warm house, where the temperature 

 ranged between I5°C and 35°C. When the etiolated shoots 

 were' 30cm. high on the average, and the roots 1015cm. long, 

 there being no open leaves yet, one portion of the shoots was 

 removed from the sand, washed, dried and analyzed. The 

 other portion was then exposed to day-light and a solution 



