摘要:1) The relative growth-rate per year of stature changes with the time as is shown in Fig. 2. Almost the same changes are observed as to those of body weight, chest girth and sitting height. (See Table 1 and 2.)2) The RoHRER'S index changes with the time as is shown in Fig. 3. Almost the same changes are observed as to relative body weight, chest girth and sitting height to stature. (See Table 3 and 4.)3) From observations on growth-rates and indices, it is deduced that the increase in growth is more intense in younger generations when living conditions become better.4) On the contrary, it is obvious that the worse living conditions at World War II and post war period influenced to weaken or delay the growth of the Japanese.5) The above mentioned differences in physical growth-rate between the younger and the older generations, are likewise found between populations in two prefectures at present time (See Table 5), in the study of local differences in growth of the Japanese.