THE ANNALS OF APPLIED BIOLOGY. VOL I, NOS. 3 AND 4 PLATE XXIV 



Fig. 4. Last stage of Red Spider attack. 



Fig. 5. Aleurodes adults on plant. 



Fig. (i. Aphis on underside of leaves. 



Fisr. 



7. Result of Aphis attack. Note 

 black veins on lowest leaf. 



