S19 1 J THER BURBA.NK 



will inevitably reappear in the second, he will 

 ooDftantly blunder in his interpretation of tenta- 

 tiTe remits. 



On the other hand, when be has learned to 

 gauge hit aeooiid-gciienition hybrids correctly, 

 he is on the highway to tuooesa as a plant 

 experimenter. 



