農業家庭・非農業家庭別にみた乳兒の手根骨発育の観察

発育と環境に関する研究第16報

抄録

Although it has already been pointed out that the growth of skeleton-carpus varies in urban and in rural areas, this time a survey was made to disclose whether there is any noticeable difference between purely agricultural and non-agricultural families (merchant, civil servant, laborer, etc.) within one and the same rural community.
1. Ossification area: Babies from agricultural families were inferior in each age group.
2. In cases of babies under 6-months old whose nutrition index (Kaup) showed less than 14.9, those from agricultural families showed inferior ossification.
3. Delayed ablactation was observed more often in babies from agricultural families and such cases showed delayed ossification of skeleton-carpus.
4. The development of skeleton-carpus was inferior in babies whose mothers showed an advanced fatigue, i. e. premature senility: this phenomenon was more often observed in babies from agricultural families.
5. The mothers of babies from agricultural families more often showed a lower serum-protein value, and the babies were in the state of under-nutrition parallel thereto.