350 Apple and Pear Scab Fungi 



Figs. 11, 12, 13. Entrance of infection hyphae of Venturia hiaeqvalis into the cuticle of 



the fruit of apple Stirling Castle, x 1600. 

 Fig. 14. Same at a later stage, x 1600. 



Fig. 15. Same showing horizontal intracuticular development of the mycelium. x 1600. 

 Figs. 16 and 17. Same growth of infection hypha directly into the cuticle. x 1600. 

 Figs. 18 and 19. Growth of mycelium of Venturia inaeqnalis in the cuticle of apple 



King of the Pippins, showing how it roughly follows the layering of the cuticle. 

 x 1600. 

 Fig. 20. Venturia pirirut on mature leaves of pear Catillac (resistant). x 1600. 

 Fig. 21. Venturia -pirina on mature leaves of pear William's Bon Chretien (susceptible in 



young leaves). x 1600. 

 Fig. 22. Same as Fig. 21. x 2050. 

 Figs. 23, 24, 25. Venturia inaequalis on the young leaves of apple Bramley's Seedling 



(resistant), x 2050. 

 Fig. 26. Cuticle of pear William's Bon Chretien. 

 Fig. 2". Cuticle of pear Port. 

 Fig. 28. Cuticle of pear Catillac. 



