]OMakch. 1919. 



.\lij)lc ('lilt lire, in Victoria. 



153 



Fig. 



Fig. 

 Fig. 

 Flo-. 



Fig. 



Fiir. 



Explanation of Plate 190. 



1. Section througli the mid-rilj of an apple-leaf, showing the dark 



clusters of spore-bearers, or conidiophores of the fungus 

 Fusiclaclium dcnrh-itkinn. arranged round tlie margin 



2. Part of the same section more highly magnified, and showing the 



appearance of the individual spore-l)earers 



o. Section through a young spot on an apple fruit, showing the 

 production of spores on the surface 



4. Section through a well-develojjed spot on an apple fruit, show- 



ing the dense mass of spore-bearers, which is colourless at 

 the base, but quite black at the top, with a few spores still 

 attached 



5. Group of .spores from a -^pot on an apple leaf 



lOi) 



X 400 



0. Germinating spore from an apple leaf kept in a moist chamber X 400 



/ 



t 



V 



'// 



,ff.2 



Fig.3 



Fig.4 



Plate 191, 

 Blaciv Spot of the Apple. 



Section through dead fallen apple leaf in early spring, showing 

 spore case or perithecium of Yenturia inaecjiinUs . . 



and 3. Asci or spore sacs of ['. iuacqiialis, each enclosing eight 

 spores 



Fig. 1. 

 Figs. 2 

 Fig. 4. Germinating spores of T. inaciiiuiUn 



X 100 



X 500 

 X 500 



