27 



Eahll, thihks, however, that there is not necessarily a connection between 

 the secretion of the dew and the formation of spores, "but that Tooth pro- 

 cesses are connected with the forimtion of sclerotia. Accordingly the 

 spores liheration in the liquid is accidental, even thongh it is of great 

 importance for the drawing out and dissemination of the sarce (145) To 

 W/ilson (299) it spsxas a mistake to suppose that the fliud is exuded lay the 

 fungus. The quantity is so large and the flow so continuous that ab- 

 sorption from the air seems the true explanation. Sorauer takes Kiihn's 

 view and thinjcs that the "honey dew" is secreted by sphacelial hyphae. 



JJiile the development of sph^celial stages extends upwards, 

 a Vi±iolly different process takes place at the base of this growth. Here 

 the ngrcelial threads increase in number and send out numerous branches which 

 together with the swelling of the hyphae themselves result in a considerable 

 thickening of the growth. At their growing points the threads are filled 

 uniformly with protoplasm. On their older parts, on the other loand, there 

 appear lighter zones, and through these an apparent tissue formation brought 

 about by the formation of crosswalls at each of these lighter zones. In 

 the thickened threads at this time tliere are formed numerous oi^ drops,' 

 such as occur later in the tissue of the perfect sclerotium. During this 

 building of rcycelial threads the structure of the internal part of the 

 fungus is markedly changed. Some of the tliread ends grow on the outside 

 forming a covering of closely applied threads which lie parallel to each 

 other. These neither thicken nor form oil drops. Their contents become 

 clear and uniform, soon turning reddish, then violet colored. This 

 coloration begins at the base and proceeds upwards, as did the B^rctbaial 

 growth preceding the formation of the sclerotium, V/hen the sclerotium has 



