336 Wisconsin Academy of Sciences, Arts, and Letters. 
workers on Ascomycetes occurs in the ascogonium, is found to 
be only pairing of nuclei, then new conceptions may be developed. 
The problem would be greatly simplified if the complex stages 
due to triple fusion were eliminated. Another helpful method 
which may aid in unraveling the nuclear history is the study of 
new forms. The list of new Wisconsin fungi compiled by the 
efforts and researches of Dr. J. J. Davis (1916-1921) continues to 
grow, and some of these forms may supply the missing link. At 
present we know so little about the effects of a physiological change 
caused by the environment on the morphology and sexual activity 
of organisms, and whether or not changes in the environment are 
immediately reflected in the offspring by morphological changes, 
that all speculations are futile. Until our conceptions rest upon 
more secure grounds, homologies and similarities may only lead 
us into scholastic discussions and far from the real nature of the 
underlying causes that find expression in these complex and truly 
marvelous forms of life. 
It gives me great pleasure to express my gratitude and apprecia¬ 
tion to Dr. E. M. Gilbert for many helpful suggestions and for the 
constructive criticism he has rendered during the course of this 
investigation. 
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