ox AN IMPORTANT FUNCTION OF LEAVES. 

 Absolute quantity in lOO leaves (in grams). 



Evening. Morning. 



Total nitrogen 0.3350 0.3067 



Albuminoid nitrogen 0.2517 0.2390 



Asparagine nitrogen 0.0230 0.0163 



Amido-nitrogen Ql^l'^,) .... 0.0603 0.05 14 



Starch 0.9600 0.4 1 34 



247 



Ratio. 



100 : 91.6 

 100 : 94.9 

 100 : 67.0 

 100 : 85.2 

 100 : 43.1 



B. Solaiiuni tiiberosimi}^'^ 



200 leaves. Dry weight. Ratio of dry matter. 



Evening (6 o'clock) 6.820 100.00 



Morning ( ,, ) 6.176 90.50 



In 100 parts of dry matter. 



Evening. Morning. 



Total nitrogen 5. 70 5. 80 



Albuminoid nitrogen 4.55 0.76 



Asparagine nitrogen 0.38 0.76 



Amido-nitrogen (^3p^^°Jjy ....077 0.46 



Nitrate nitrogen Trace Trace 



Absolute quantity in 100 leaves (in grams). 



Evening. Morning. Ratio. 



Total nitrogen 0.1944 0.1791 100:92.1 



Albuminoid nitrogen 0.1552 0.1414 100:91.1 



Asparagine nitrogen 0.0130 O.0235 100 : 18.0 



Amido-nitrogen (asp!'^nkr.) • • • •0-026o 0.0142 100 : 54 



III. Experiment with Convolvulaceae. 

 Batatas edtilis.'-'^^ 



100 leaves. Dry -weight. Ratio of dry matter. 



Evening 34.565 100.00 



Morning 32.766 94.80 



(1) This experiment was made on the 12th Oct. 



(2) This experiment was made on the iSth Sept. 



