258 



were covered after some time by a layer of conidia, which was not 

 very dense. 



Saccharose 5°o. (28—37; 1058), table 11 A. 



G S: 1. e. inoculated with conidia from a culture on 5% glucose. 



Saccharose 5% (18—22; 989), table 1 1 B. 



S S: 1. e. inoculated with conidia from a culture on 5% sac 

 charose. 



Development of diastase m the culture solutions of both séries 

 is very insignificant. After the 13 day a small amount of dias- 

 tase was found in the mycélium of G S and this for ail further ob- 

 servations remains practically constant. In S S not even this small 

 amount of diastase is found. Such small quantities are formed, 

 that they may safely be neglected. The hydrolysis of the saccharose 

 and the assimilation of the inverted sugar almost took equal times 

 in both séries. I hâve no explanation to offer for the fact, that the 

 maximum dry weight in G S was reached later than in S S. 



Saccharose 5% + Fë + Zn (11—16; 1426) table 12 A. 



G S' : i. e. inoculated with conidia from a culture on 5% glucose. 



Saccharose 5%+ Fë + Zn (11 — 18; 1417) table 12 B. 



S S' : i. e. inoculated with conidia from a culture on 5% sac- 

 charose. 



The dry weight hère is really greater than in the fermer séries 

 to which no zinc and iron salts had been added; besides the maxi- 

 mum weight is reached much sooner. 



After the 11* day some diastase appears in the mycélium of 

 G S' which on the 26* day has disappeared again. This is about 

 double the amount found in the G S séries above and this relative 

 increase is probably due to the influence of zinc and iron ions. The 

 fact that in S S there is no diastase formation, as it was the case 

 in S S, is the only indication of the différences, due to the origin 

 of the conidia. Nevertheless a simple fact like this one may cause 

 two observers to disagree entirely, simply because they did not 

 notice from what type of culture they obtamed the conidia, from 

 which they grew their cultures. 



