During the summer of 1965, pulse rates and palpable livers were studied in healthy children of a primary school in Kaohsiung City. A total of 3,082 children, 1,594 males and 1,488 female, were examined for pulse rates. Their ages ranged from 5 to 13 years. And a total of 3,046 children, 1,577 males and 1,469 females, were examined for the widths between the right costal margin and the lower liver edge. Their ages ranged from 4 to 13 years. Past histories of jaundice or liver diseases were checked in the children who had palpable livers. The results obtained from these studies are analysed and summarized as follows. 1) The mean pulse rate for the whole group studied was 93 ± 15.0. The mean pulse rate of those at the age of 5 years was 103±14.2 and it decreased to 88±14.8 of those at the age of 13 years. The age difference of the mean pulse rate among those of 5 to 7 years old was remarkable, but not so among other age groups. The mean pulse rate decreased gradually with the increase of age. 2) For the whole group studied, the mean pulse rate in males was 91±15.1 and that in females 95±14.4, and the mean pulse rate of females was higher than that of males. However, the mean pulse rates of both males and females at the age of 5 years were the same. 3) The palpability rate of the liver for the total group studied was 18.48%, and that of those' at the age of 4 years was 61.54% and it decreased gradually to 3.57% of those at the age of 13 years. The age difference of the liver palpability rate was statistically significant, but the sex difference in each age group was insignificant. 4) The maximum width between the right costal margin and the lower liver edge was 4.5cm in males and 5cm in females. The widths of the majority of the palpable livers (97.65° in males and 97.36% in females) were within 3 cm below the right costal margin. The width of the palpable liver below the right costal margin decreased gradually with the increase of age, but showed no significant se difference in each age group. 5) Only 13.32% of the children (14.09% of males and 12.45 % of females) with palpable livers had the history of jaundice or liver diseases. The maximum width of palpable liver below the right costal margin was 3.4cm among those with no history of jaundice or liver diseases and was 5cm among those with no history of jaundice or liver diseases, but 98.66% of the palpable livers in the former group and 97.34% of those in the latter were within 3cm below the right costal margin. The width of palpable liver decreased gradually with the increase of age in both the above two groups.