154 



MISSOURI BOTANICAL GARDEN. 



responds to the growth of the haustorium. "Dieser Umstand 

 macht es eher wahrscheinlich, dass die Epithel einen Stoff 

 an die nachsten Endospernizellen abgiebt, der die Losung 

 des Zellstoffs bewirkt," 



b. Phoenix dactylifera. 



Transverse section through a germinating seed in which 

 the embryo has formed in an abnormal position. — h 9 

 Haustorium. t, Integuments, p, Endosperm plug which 

 caps the embryo during the resting stage. r f Raphe, 

 partly torn out. x, y, Portions of endosperm the cells of 

 which are represented on a larger scale (the same for 

 both) at the left. The relative position of this abnor- 

 mally placed embryo and of a normally placed one is 

 shown at n and a. 



, Sachs' conclusion was not accepted without 

 (189G) especially thought he had proved to 

 the contrary, though his evidence is not convincing. New- 



demur. G 



combe (1899) 



cytohydrolytic enzyme 



