104 CONCENTRATION OF USE library service reached the various groups constituting the community by comparing the distribution of four major per- sonal characteristics (4) in the adult population, (4) in the total library clientele, and (¢) in the group of most frequent borrowers, that is, the top 20 percent, who withdrew almost three fourths of the total adult circulation (Table 38).° Briefly, the characteristics analyzed were these: Sex: In both 1945 and 1947, the proportion of women who were borrowers from the library was greater than their pro- portion in the adult population at large, and their proportion among the frequent borrowers was still greater. Age: The representation of the different age groups among the total borrowers differed in 1945 and 1947, but in both years the older groups in this particular library were more heavily represented among frequent users of the library than the younger groups. (Presumably because of the return of members of the armed services, the 1947 library clientele in- cluded more men and more younger people than the 1945 group. In regard to age, the Montclair Library is probably not typical of other public libraries in this pattern of con- centration.) Education: The relation of education to library use differed from that of age in the following way: the distinction for age groups was found between the total borrowers and the frequent borrowers; that for education appeared between the population and the total borrowers. Those with less schooling did not use the library much, but those who did, used it about as frequently as those with more schooling. Occupation: The professional and managerial groups were over-represented in both the total clientele and in the group of most frequent users of the library. Housewives were about °It is unfortunate that the distribution of these characteristics in the adult registration, as a group between the adult population and the borrowers, was not available for comparison at this point.