i9i 9l 



WOO— AMARANTH IS 



327 



per official method by the use of salicylic acid and sodium thio- 

 sulphate, reduced only 60 per cent of the nitrate into ammonia.) 



12 13 



Frc. 6. — Different carbohydrates in roots 



It is incorrect to call all this nitrogen as derived from protein, 

 because part of the soluble nitrogen was from the breaking down 



