DEVELOPMENT OP THE PERITHECIUM OF MELIOLA. 
599 
Fig. 33. Vertical section through nearly ripe Perithecimn, showing asci and spores 
embedded in the gelatinous mass produced by the disorganisation of the 
unemployed cells.— Zeiss D. 
Fig. 34. Portion of outer wall of latter in vertical section.— Zeiss J. 
Fig. 35. Vertical—not median—section through ripe Perithecium (and portion of 
epidermis of host-plant), showing crowds of spores. 
Fig. 36. Thin slice from top of similar Perithecium. A pore-like spot is seen in the 
centre of the radical marking. 
Figs. 37, 38 and 39. Various stages in the development of the asci and spores.— 
Zeiss J. 
Fig. 40. Germinating spores.— Zeiss D. and E. 
Fig. 41. Portion of mycelium of a species of Meliola found on Pavetta, showing 
mycelium, setce, and young Perithecia.— Zeiss J. and D. 
Figs. 42 and 43. Development of Perithecia and extrusion of spores. 
