21 8 



U. SUZUKI. 





Leaves. 



Stems. 





Healthy 



Diseased. 



Ratio. 



Healthy. 



Diseased 



Ratio. 



Moisture. 

 Dry matter. 



78.90 

 21.10 



73-64 

 26.36 



100 ; 93.0 

 100 : 125 0 



S7-35 

 12.65 



85.05 

 14-95 



100 : 97 3 

 100 : 113.0 



In 100 parts of dry matter. 



Ash. 



11.76 



7.82 



10O : 



66.5 



12.5 



8.90 



100: 71- S 



Total nitrogen. 



5.28 



3-70 



100 : 



700 



316 



3- 2 9 



100 : 104.1 



Albuminoid 



nitrogen. 



3-8° 



2.70 



100 : 



71.0 



1.40 



1.30 



100 : 92.9 



Non-albuminoid 

 nitrogen. 



1.48 



1. 00 



100 : 



67.9 



1.76 



1.99 



100: 113.0 



We see from this that the new shoots coming from the 

 diseased stocks are considerably poorer in nitrogen and ash, 

 which evidently shows that their roots contained very little 

 reserve materials, which were insufficient to meet the demand 

 of the new shoots even in the first stages of development. 



(III). By grafting diseased shoots on healthy roots or stems, 

 many of them can be made to recover and grow normally. We 

 may therefore infer that the disease is exclusively due to defici- 

 ency of nutriments, and may be prevented by replacing worn- 

 out roots with vigorous ones. The following experiments prove 

 this point. 



