15 IG 



n 







24 



25 



21 ■?. 



26 



27 



Figure 15-16. From Lechriopyla mystax: Figure 1?, end view after Hirschler's 

 mitochondrial technique; Figure 16, lateral view, after Champy-iron haematoxylin. (After 

 Lynch, 1930.) Figure 17. From Ichthyophth'trius multlfilns, series showing mitochondria 

 and the secretion of paraglycogen, vital stain with janus green. (After MacLennan, 

 1936.) Figures 18-21. From Monocystii showing de novo origin of mitochondria: Fig- 

 ure 18, sporozoite; Figure 19, trophozoite; Figure 20, conjugating gametes from a cyst; 

 Figure 21, spores, Champy or Flemmings — iron haematoxylin. (After Horning, 1929- ) 

 Figures 22-25. From Atnoeba proteus: Figures 22-23, free in cytoplasm; Figure 22, nor- 

 mal: Figure 23, fixed in modified Regaud's fluid; Figures 24-25, on surface of contractile 

 vacuole. (After Mast and Doyle, 1935.) Figures 26-27, From Aggregata ebe.rthi: Figure 

 26, mitochondria proper; Figure 27, mitochondria associated with protein reserves. 

 (After Joyet-Lavergne, 1926.) Figures 28-29. From Btirsaria truncatella: Figure 28, 

 section of early conjugant; Figure 29, section of later conjugant. (After Poljansky, 

 1934.) 



In all cases, material which responds to mitochondrial stains is drawn in solid black; 

 associated granules are stippled. 



