Manchester ATenioirs, Vol. Ivii. (191 3), No. 11. 23 



Plate II. 



Fig. 14. — A normal spongy-mesophyll cell of the leaf in trans- 

 verse section. x 1,800. 



Fig. 15. — A corresponding cell to Fig. 14 entered by a haus- 

 torium, showing one branch in contact with the 

 enlarged nucleus. The chloroplasts are apparently 

 normal. x 1,800. 



Fig. 16. — A living palisade-parenchyma cell entered by a 

 haustorium. The chloroplasts are apparently 

 normal. x 900. 



Fig. 17. — A living cell of the cortical parenchyma of the 

 petiole, underlying a well-developed teleutospore 

 sorus. Haustoria are seen lying in the protoplasmic 

 strands and the disorganising chloroplasts are 

 aggregated round the enlarged nucleus. Seen in 

 optical section. x 650. 



Fig. 18. — The same cell as Fig. 17 after partial plasmolysis with 

 5 % NaCl. The t)rotoplasm contracted from the 

 wall and was observed to cross the cell towards 

 the nucleus. The nucleus also is somewhat con- 

 tracted. X 650. 



Fig. 19. — The same cell as in Figs. 17 and 18, after recovery 

 from plasmolysis, in water. The protoplasm has 

 moved back to the cell wall. x 650. 



Fig. 20. — A normal living cell of the cortical parenchyma of the 

 petiole in a corresponding position to that figured in 

 Figs. 17, 18 and 19. Seen in optical section, x 650. 



Fig. 21. — Similar cell (fixed) in T.S., showing peripherally- 

 placed nucleus and a young haustorium entering 

 from opposite side. x 650. 



