The Significance of Counter-Euclidean Geometry for an Understanding of Living Nature. At a time in history when contemporary social and economic thinking has been dominated by the idea of an expanding economy, scientific thinking has taken a similar direction-especially as regards theories of an expanding universe. It is importantto note this trend, for the ways in which men have at verying times in history conceptualized the universe in which they live-the forms of thought in which their science or their religious beliefs are expressed-have a direct effect on their ways of living and upon their social forms. The prevailing "thought forms" (Denkformen) of a time are reflected in the social organism. - *From the first paragraph* Olive Whicher, who is a member of the faculty of Emerson College in Sussex, England, where she lectures and gives practical courses in Projective Geometry and Plant Morphology, worked for twenty-eight years with George Adams. She is a co-author with him of several books on palnt morphology, and has written a book on Projective Geometry which has been published in German and English.