A NF.w Ai'i'Li-: TKi:i-: CAXKin^. 271 



ni-.SCKIlTlOX OF PLATES XXI to XXX. 

 PI.ATI■^ XXI. XXII. 



Pliotci.L;rai)lis taken at Vcrceniginj^- shnwing diseased trees and 

 limhs. 



PXATKS XX II I. XXIV. 



Phctdniicniiiraphs of sections througii stromata of the fnngus. 

 PiATK XX\-. 



((() Cnltnre of fungus on beef Ijroth agar in light. 



(h) l'~iingus on Coons' Sohition showing mycelial bodies. 



Pl.xtk XX\'1. 



( (/ ) l-'ungus nn Coons' Solution, showing mycelial bodies. 

 ( /' ) L'uhure on beef loroth a.gar in dark. 



Plate XX\"II. 



(a) Inoculated Xorthern Spy Stock. 



(/') Portion ot cankered limb of apple. The view on the left 



shows discoloration of wood due to growth of fungus, 

 (r) Inoculated X'orthern Spy Stock, showing" discoloration of 



outer layers of the wood. 



Platk XXVII 1 



( (/ ) Inoculated Xorthern Spy Stock, showing discoloration ot 



internal tissues three months later. 

 ib) Inoculated apple showing pycnidia. 



Pl.\te XXIX. 



(a) Dead bark of a canker showmg sporophores of ScIiicopIiyUiiiii 



coDinume as saprophyte. 

 {b) Stroma of BotryosfJicrria iiinl: on api)Ic twig from culture tube 



after three months. 



Plate XXX. 



(a ) Pvcnidia on stroma in Coons' Solution. 



(b) Stromata on apple wood chips. 



