26o 



RESEARCHES ON FUNGI 



mycelium ; (2) then this diploid inoculum diploidised the large 

 haploid mycelium progressively from the side in contact with the 

 inoculum all around the periphery to the opposite side (Fig. 138) ; 

 and, finally, (3) the large haploid mycelium, after becoming dip- 

 loidised, diploidised both of the isolated haploid inocula. In each 

 of the four experiments, the large haploid mycelium was diploidised 

 by the diploid inoculum but not by the two isolated haploid inocula. 



Table IX. 



Illegitimate Combinations : Comparison of the Effect produced on a Large 

 Haploid Mycelium by Three Simultaneously-applied Widely-separated 

 Inocula, Two Haploid and one Diploid. 



Some time-data recorded for Experiment No. 3 of Table IX 

 are as follows. The experiment was started about 1 p.m. on May 8. 

 Two days after inoculation, the (AB) and (ab) mycelial fragments 

 which had been set close together were found to have diploidised 

 one another, so that a diploid inoculum for the large (^6) mycehum 

 had become established. Three days after inoculation diploid 

 hyphae were observed to be present at intervals all around the 

 large haploid mycelium (Ab), but none could be detected in the 

 two isolated inocula (AB) and (ab). Four days after inoculation, 

 diploid hyphae were observed all around the periphery of each of 



