igig] 



WOO— A MA RA N TH US 



325 



because the fall at this time is only from 6.03 to 5.84 per cent 

 (almost within experimental error). 



IS te 



Fig. 4. — Nitrogen compounds in stems 



Soluble protein. — Soluble protein in Fi and F^ is computed 

 from the Kjeldahl nitrogen determination. The nitrate nitrogen 



