一島嶼 (伊豆七島利島) に於ける婚姻の調査研究

第4報出生及び受胎調節の調査

抄録

4. A survey of birth and birth-control; The average numberof birth of a woman was 3.5, which is not so high. The number of birth tended to decrease in younger generation. According to the survey on birth-control, among 48 ansewers of whom used to practice birth-control, the economical reason proved 27.1 %. Besides, it was remarkable that artificial abortion was popular