The fundamental difficulty can be briefly summarized by applying the sociologist’s concept of maladjustment. American science, notwithstanding its notable achievements, is not an organic product of our soil; it is an epiphenomenon, a hothouse growth. It is still the prerogative of a caste, not a treasure in which the nation glories. We have at best only a nascent class of cultivated laymen who relish scientific books requiring concentrated thought or supplying large bodies of fact. This is shown most clearly by the rarity of articles of this type even in our serious magazines. Our physicians, lawyers, clergymen and journalists--in short, our educated classes--do not encourage the publication of reading-matter which is issued in Europe as a profitable business venture. It is hard to conceive of a book like Mach’s “Analyse der Empfindungen” running through eight editions in the United States. Conversely, it is not strange that hardly any of our first-rate men find it an alluring task to seek an understanding with a larger audience. Newcomb and James are of course remarkable exceptions, but they _are_ exceptions. Here again the contrast with European conditions is glaring. Not to mention the classic popularizers of the past, England, e.g., can boast even to-day of such men as Pearson, Soddy, Joly, Hinks--all of them competent or even distinguished in their professional work yet at the same time skilful interpreters of their field to a wider public. But for a healthy cultural life a rapport of this sort between creator and appreciator is an indispensable prerequisite, and it is not a whit less important in science than in music or poetry.