Sensitivity of taste to saccharose solution in the neighbourhood of the threshold was examined before and after the meal in employees of a railwary carriage plant. No difference was observed between the corresponding values before and after the meal, notwithstanding the expected change of the blood sugar level.
Blood sugar change caused by a lunch, as well as by intravenous injection of 9 grams of dextrose was determined. From the result it was cenfirmed that (i) change of blood sugar by 20% did not affect the taste sensitivity of the subject to saccharose solution, , and that (ii) the blood sugar level lay 72-90mg/d1 after the daily labour i. e. well within the normal range, and accordingly the enhancement of sweet taste sensitivity after the work is related to some factor other than the fluctuation of the blood sugar.
The postural blood pressure reflex, or the reflexive restoration of the original blood pressure level after a change of posture from sitting through supine back again to sitting posture, has been proposed by Prof. Hukuda as an index of maintained adjustment of the autonomic nervous system. Regarding the nature of the temporary fall of the blood pressure directly after the sitting-up, the author followed up roentgenologically the change of various measures on the heart sillouette. It was revealed then, that the change of the sillouette shape occurred in such a way that the stroke volume of the heart corresponded to the maximal blood pressure in their time course during the period following the posture change of the test
1. Four normal girl students of a provincial Girl's Junior College volunteered and was subjected to repeated tests for the ability of mental work, carried out after the procedure developed by Mr: Yusaburo Uchida. Of four test-sessions, covering 2 weeks, the first and the third tests were performed with oral signaling, while the second and the fourth tests were done with a signal clock. 2. With oral signaling, initial effort effect was sometimes absent or less marked, which was not the case with clock signaling procedure. No other significant, differences were noticed between the two procedures. 3. A “hump” formation was often observed somewhere about the tenth minute from the beginning of the test, in individual curves as well as collective composite curves.
A biometric study was conducted in the central district of Fukushima Prefecture, in April 1955 for the purpose of finding out anthropological chracteristics of inhabitants of the Iwashirô-Atami district. Six villages, relatively isolated from blood mixthre with other communities, were chosen and 572 adult males were studied with reference to the anthropological measurement of the trunk, limbs, head and face. On the basis of 25 items obtained from the direct measurement and subsequent computation, detailed analyses were made in comparison with other districts where similar survey results were available. In summary, it was found that the inhabitants of IwashirO-Atami district showed close resemblance to inhabitants of Kaga and Tôkai provinces. It may be interesting to note in this connection, that local traditions of the district often claim the origin of its inhabitants as an ancient political immigration of a race which was closely associated with Hokuriku and Taal. provinces. Most outstanding was the fact that the length-width index of the head of this district, 8 086, i. e. the long head type was maintained for a few thousand years, notwithstanding the intercourse and blood mixture with other communities. The present study, it is hoped, will contribute to the formation of a general picture of the genesis of the Japanese race as a whole.