The identity of a pair of twins, found in the data of his former studies on the senses of taste, had already been confirmed by the author, using several substances for deciding whether they are identical or dizygotic. Through his researches in the taste of these twins to be regarded as identical, the author has reached the following results, making use of the three reagents of P. T. C., lactose and aspirin. 1. Byth of the twins tasted the bitterness of P. T. C. and even to the P. T. C. solution diluted ninety-thousand-fold they complained of equal bitterness. 2. To the lactose they had the sensation of bitterness, and to the aspirin they both seemed to have tasted something strange and told that it was rather astringent. 3. From these results of the entirely same taste reactions in the identical twins, the inheritable character of the sense of taste can be clearly inferred. 4. Thus the taste of taste reactions to some medical substances may be added to the hitherto known diagnostic methods for determining twins as identical or dizygotic.
The author has been engaging in the research on the skin colour of the face, using a colour scale. The colour table was specially made for the determination of the skin colour by Japan Colour Institute with polyvinyl plastic. This paper is a record of the skin colour of the face observed in 80 male and 82 female who are all healthy adult Japanese. The results obtained are as follow: 1. Difference by sex: the difference between both sexes were not so distinct as expected, and only in hue, male showed the significantly higher value than famale. 2. Difference among forehead, cheek and chin : the significant correlations were observed in three elements-hue, luminosity, and saturation. 3. Difference between the younger age group and the elder one: the author divided the persons tested into two age groups, i. e. the group of 39 years old or younger, and the group of 40 years old or elder. The values of hue in the three parts of the latter were higher than that of the former, and the values of luminosity of forehead and chin of the latter is significantly lower than that of the former. 4. Difference by occupations : the author compared the akin colour of nurses and that of women working on farm, and only found the significant difference in the hue of cheek and chin of them; i. e. that of the former was lower than that of the latter.
Although the incidence of deaths resulting from heart disease in Japan is still considerably lower than the of some foreigh countries, a continuous rise in the numer of such deaths is discernible over recent years. In order to determine the prevalence level and what factors are responsible for this trend, , the need for systematic epidemiological studies is indicated. In carrying out such a project, careful methodological consideration. should be given to the techniques suitable for the survey as well as to the time, place and person preferably to be selected for studies. The results, using death statistics, X-ray and electrocardiogramme as the indices of the studies, reported as follows: 1. Age: all three indices indicate that as age increases, the prevalence of heart disease increases proportionally. 2. Sex: death statistics and E.C.G. show that a higher percentage of men suffer from heart discase, while X-ray reveal that the percentage of hypertrophy is higher in female than in male especially in rural district. 3. Urban & rural relations: death statistics and X-ray show a higher prevalence of the disease in urban area, while E.C.G. indicate a higher percentage of prevalence in rural district. In the case of abnormal P-wave and arythomia, however, the percentage is found higher in urban area than in rural district. 4. Diet: death statistics and E.C.G. indicate a higher prevalence among overweight-persons, though X-ray indicate a higher rate of hyphertrophy among underweight-persons. 5. Nationality: there is no marked difference in the percentage of abnorma lity in E. C. G. among occidentals living in Japan and Japanese people. It is likely that the similarity in diet ar d in climate plays a greater rule than the difference in nationality. 6. Profession: in the case of those who d: ed with hypertension, a greater numer of fi3herma-n had heart disease than the other profession. This might again indicate this strong influence or diet. 7. Season: the six years average figure of the death rate from heart disease in Nov. & Dec. and also in May & June than in Aug. & Sep. indicating the intimate relationship between the occurrence of death from heart discase and the maladaptation to the changing climate.
The authors made an investigation and analysis of farmer's dwelling in Toshima Island, one of the i3olated island of the Seven Islands of Izu. The physical feature of the Island is characteristic because of steep cliff surounding the Island and a poor expansion of level area. Due to strong seasonal winds and rain, villages are located on the hilly part rich in groves of trees. According to the investigation performed, the following results were rea: hed : 1. The area of the residential part is 598 sq. meter (180.8 tsubo) on the average and the floor space of the main dwelling average 80.3 sq. meter (24.3 tsub3) which means that houses are small in comparison to the size or the land. 2. The length of time after the dwellings were built, is 40.9 years in average. 3. The number of room found 4.1 per house and size of rooms per total space of house, 39.4 sq. meters (23.2 Joo) which is comparable to the s'ze of room of forming vil'age in other district but the number of inhabitants was found as 5.4 persons per house, which is less than in el: ewhere. Hence, the usable room space is 7.3 sq. meters (4.3 J o) per person which is larger than the national average of 6.1 sq. meter (3.6 J3o). 4. The dwellung of the aged are detached. 5. The scale of farming is small and means of production are limited and the size of attached buildings (earthen store rooms, store house and barns) is not large. 6. The details of the dwellings, for example, kitchen, water supply, toilet and such things as location of barns, lighting and ventilation should resonably be improved