iqiq] 



woo— A MA RA N TH US 



329 



Carbohydrates. — The carbohydrates were determined by the 

 reduction method with Fehling solutions. The cuprous oxide 



Fig. 8. — Different carbohydrates in leaves 



obtained was dissolved in excess of ferric ammonium sulphate 

 with H2SO4 previously added. The ferrous ions produced by the 

 oxidation of cuprous oxide were titrated against a N/20 KMn04 



