MULBERRY-DWARF TROUBLES IN JAPAN. 



173 



Crude fibres 

 Nitrogen-free extracts. 

 Crude ash (free from ca 

 Total nitrogen. 

 Albuminoid nitrogen 

 Non-albuminoid nitrog* 



In 100 parts of ash (free from carbon and sand), 



Healthy leaves. Diseased leaves. 



SiO, 3-7 1 3-37 



S0 3 6.23 3.S5 



PA M.34 13-55 



K.O 35.20 30.53 



CaO 15.20 18.90 



MgO 8.22 10.46 



The above results show that the diseased leaves contain less 

 nitrogen but more fats and nitrogen-free extracts. In the ash in- 

 gredients, we find less sulphates and potash but more lime and 

 magnesia in the diseased leaves. 



2. Tsuruta October 15, 1897. 





Healthy. 



Diseased. 



Number of leaves 



IOO. 



500. 



Total fresh weight of leaves 



322. 



181. 



Average fresh weight of 1 leaf 



3.22 



0.36 



Total dry weight of leaves 



96-35 



67.68 



Average dry weight of 1 leaf 



O.96 



0.135 



Moisture in fresh leaves 



70.00 



62.6 



Dry matter in fresh leaves 



30.00 



374 



In 100 parts of dry matter, 







Healthy leaves. 



Diseased leaves. 



Crude proteids 



26.88 



23-13 



Crude fats 



5.80 



4.4O 



Crude fibres 



8.74 



6.70 



Nitrogen-free extracts 



51-23 



57-71 



Crude ash (free from carbon and 







sand) 



7-35 



8.06 



Healthy leaves. Diseased leaves. 



41.27 54.20 



-bon and sand) 7.87 8.14 



7.67 5.53 



5.15 4.07 



in 2.52 1.46 



