JEfiANGIR FARDUNJI DASTTJR. 229 



Fig. 2. Hyphse on the surface of the same two media. 



... 3. (a) Submerged hyphse in the same two media. X 405. (b) Typical 

 swollen budding hyphse near about oospores in oat juice agar. X 405. 



„ 4. Different kinds of septa. In (d) two cellulose plugs (x) grow in from 

 the opposite walls which would have ultimately closed the hyphse 

 at this point, (e) is a bit of an old hyphse growing in the substance of 

 a medium showing septa at the origins of two branches. X 640. 



., 5. Cellulose plugs in hyphse. In (a) x i completely closes the bore of the 

 hyphse. At x are three plugs which almost close it. In (b) x is an 

 ingrowth which increases in size by caplike deposition of cellulose 

 on it. In (c) are two ingrowths arising from the opposite walls and 

 meeting each other thereby completely closing the hypha. In 

 (d) xi is a thick cellulose plug. At x is a cellulose ingrowth of the 

 inner wall of the hypha. X 640. 



„ 6. Branches arising through septa. X 640. 



,, 7. " Resting "' conidium. X 405. 



„ 8. ; ' Eesting " conidium germinating. X 405. 



,, 9. "" Resting '" conidium. X 405. 



,, 10. "Resting" conidium giving rise to secondary "' resting " conidia. 

 X100. 



„ 11. Immature intercalar "resting"' conidium. X 405. 



„ 12. " Resting " conidium germinating and producing a sporangium. 



„ 13. Intercalar " resting " conidium. X 405. 



„ 14. Abnormal sporangium germinating conidially ; from potato juice agar. 

 X 405. 



„ 15. Germinating internal sporangium in the pericarp of a fruit. X 405. 



„ 16. Portion of the mycelium from Peptone Broth. X 405. 



PLATE VI. 



Fig. 1. Antheridium which is just being pierced by an oogonial hypha under- 

 neath it ; observed vertically downwards. X 625. 

 ,, 2. Oogonial hypha indenting an antheridium. (Freehand drawing). 

 Figs. 3 and 4. Oogonial hypha originating within the antheridium. X 625. 

 Fig. 5. Oogonial hypha that is lying within the antheridium after penetrating 

 it. X 625. 

 „ 6. Same as above, the antheridium is intercalar. Optical section. X 625. 

 „ 7. Same as Fig. 5. X 625. 

 Figs. 8 — 11 More advanced stages of Figs. 5-7. The oogonial hypha boring its 



way out of the antheridium. Figs. 8 and it. X 625. 

 Fig. 10. The oogonial hypha is on a lateral stalk. X 625. 

 „ 11. A mature intercalar oogonium. The septa in the antheridium have 

 cellulose thickenings on them. X 1165. 

 Figs. 12—16 and 17—22. Mature oospores. X 1165- 



