This research is an investigation of the physical development of children from 6 to 14 years old, of Japanese origin, born and grown in Brazil, living in Bauru, State of Sao Paulo, Brazil. It presents data collected in three successive years and the corresponding annual increases: it demonstrates that this increase is greater in the beginning of adolescence. If also shows, by the sittingheight/height and weight/height indices that the body type of the JapaneseBrazilian children is somewhat different from the native ones, comparatively longer trunk in relation to the legs. It concludes by stating that a betterment of conditions, chiefly food ration, that has already taken place also in Japan, will produce a better development of the heraditary potential of these children.

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The physiological growth of the Formosans has been considered comparing with that of the Japanese and the Poles by a new graphic representation based on height and weight. The Fuchen-Formosans from 1 to 22 years consisted of 1231 males and 958 females have been measured by the authors in Tainan City during 1963-1964.
As for the developmental curve (fig. 1), the shape of curve is almost identical among these three racial groups, the Formosans however being inclining to a little more slender type of physique. The curve of the Formosans departs from the others after about 5 years and parallels them with a constant distance after about 9 or 10 years.
The Formosans precedes the Japanese in growth in early period, but there is no difference in the physique and growth between both racial groups after the time of the maximum velocity. However, the Poles is considerable different from the both Asian groups as for the apparent first growth spurt appeared in 5-6 years and the magnitude of the maximum velocity.
In the physique of adults, the Formosans is a little more slender than the Japanese and the Poles, and the Poles are apparently taller and heavier than the both Asian groups. These differences are probably due to that of the growth at and after the period of the first and the maximum spurt among these three racial groups.

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Mechanical oscillations on the body surface have been presumed to correspond with the rhythmical tendency of skeletal muscles and to be determined by the delay in the stretch reflex servoloop (LIPPOLD et al. '57). On the other hand, the oscillations in the spinal reflex arc have been emphasized to be directly responsible for the generation of the invisible microvibrations on the human body surface (SUGANO & INANAGA '60, '61). The present study began with the interest to the relation between the frequency characteristics of the global EMG and the mechanical vibrations on the body surface. The results are summarized as follows :
1) The amplitude and the frequency of the microvibratinos were different among various sites of the body surface. It was indicated the amplitude of the vibrations was independent on the degree of the abundance of the muscular structure below the recording site. Besides differences between the absolute frequency of the vibrations and that of the EMG below the recording site, no parallelism between the frequency spectra of the vibrations and of the EMG was confirmed. In addition, the amplitude and the frequency spectra of the vibrations showed considerable variations within and among subjects, as compared with those on the global EMG.
2) In the averaging addition performed synchronously with the R waves in the ECG of subjects, it was indicated that some components in the vibrations progressively developed as the addition time progressed. This syntonous component to the heart beats was present even when the muscles underlain below the recording surface contracted. The above results may be difficult to be explained without the role of the heart beats for the generation of the microvibrations.
3) Cooling a foot with ice-water caused increases in the amplitude and highering in the spectra of the microvibrations with a transient decrease in the amplitude immediately after the commencement of the cooling. During the cold stimulation any remarkable changes in the heart rate were detected. This means that the increase in the amplitude and the highering in the spectra were caused from some factors having no direct connection with the cardiac cycles.
4) When the muscles below the recording surface contracted, the amplitude of the microvibrations increased greatly, in particular, in the beta frequency ranges. However, the syntonous component to the cardiac beats was less in amount as compared with the calm state. This indicates that the increase in the amplitude and the highering in the spectra were also caused mainly from factors having nothing to do with the cardiac beats.
5) The amplitude of the microvibrations became large and the frequency of those shifted to high when the contralateral muscles to the recording site contracted voluntarily. Also in this case, the syntonous component to the heart beats was indicated not to be responsible for the changes in the vibrations.
6) It was supported that in the microvibrations there would be two factors, one is syntonous to the cardiac beats (the cardiac factor) and the other is drived from the muscle tonous (the muscular factor).

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The proximal carpal bones participating in the radio-carpal joint are arranged in the form of an arch. The proximal contour of this arch on roentgenograms was analysed quantitatively by KosowIcz (1962), who designated the "carpal angle" as follows : the angle of the intersection of two tangents, the first touching the proximal outline of the scaphoid and lunate and the second touching the triquetrum and lunate. According to his paper, the carpal angle of 117° or less (" positive carpal sign") was found in half of the white patients with gonadal dysgenesis, and in only 5.4% of normal whites.
The present communication is concerned chiefly with the incidence of the positive carpal sign and the mean value for the carpal angle in normal Japanese.
The subjects consisted of 184 males and 247 females, 4 to 88 years of age. The distribution of subjects according to age was shown in table 3. The dorsopalmar radiograms of the hand were taken, with the axis of the forearm parallel to that of the third digit. On the roentgenograms, the carpal angle was measured according to the method of KOSOWICZ as shown in figs. 1-3. If the carpal angle was 117° or less, this was called the positive carpal sign.
1) Mean values for the carpal angle in normal Japanese were 126.0° and were significantly smaller than in normal white subjects of KOSOWICZ. No significant differences were found in the mean values in association with age, sex or between the right and left hands. The mean values for the carpal angle were also calculated separately for each category of carpal sign (positive and negative) (table 4). The table emphasizes that the mean values for the carpal angle of the positive category were extremely small and this fact reflects on the smaller mean values of the carpal angle in Japanese.
2) The incidence of the positive carpal sign was 16.5% in males and 20.0% in females as shown in table 1. The differences by sex, age and between the right and left hands were statistically non-significant. The positive carpal sign was seen in Japanese 3 or 4 times more frequently than in normal whites of KOSOWICZ.
3) No definite relation of the positive carpal sign to the positive metacarpal sign was found. This disagrees with the finding of KOSOWICZ in whites.

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