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The article examines the medical problems of female adolescents attending a contraceptive clinic in Manhattan, New York City. About 266 significant medical conditions have been found among the patients before their initial visit to the clinic. A high incidence of vaginitis, cervicitis, and cystitis has been noted. Serious pathological findings such as congenital abnormalities of the reproductive system, breast tumors and gastritis have been revealed during clinic attendance. About 135 of the patients had either psychological or social problems.

The exploration of antecedent-consequent relationships or probable causation is facilitated by use of the ex post facto experimental design. In the present study, it was assumed that rentals may be taken as a rough index of a bundle of social and economic factors causally related to crowding in dwelling units. There is empirical evidence from previous studies of the relationship of crowding to certain social and structural factors, including rental rates. Empirical results suggest the hypothesis that there is an inverse relationship or correlation between rentals and crowding. This measure of relationship correlates rentals and crowding for a single date and does not measure antecedent-consequent relationship. For the borough of Manhattan, New York, using census tracts as units of area, a correlation of rental r = -.31 was obtained between changes in rentals and associated changes in percentage crowded from 1934 to 1940. This correlation, based upon changes between two dates, approaches more closely to an analysis of possible cause and effect relationships, but of course, it offers no proof of cause and effect.

This article presents information on the purchase of the Manhattan Island, New York. According to the author Peter Schagen of Amsterdam did purchase Manhattan Island from the Indians in 1626 for 60 guilder, now assumed to have been worth about $24. At the time of the purchase New York City's midtown area was occupied by a scrub forest abounding in snakes and wolves, but there was tillable land at the northern end of the island.