The effect of L-ascorbic acid on the activity of pepsin in the presence of free radical producing system was studied and the following results were obtained.
The enzyme was greatly inhibited by the co-existence of hydrogen peroxide and L-ascorbic acid. While the enzyme was slightly inactivated by cupric, ferrous, or ferric ions, it was greatly inhibited by the co-existence of L-ascorbic acid and these ions.
The enzyme was inactivated by the Fenton's system (hydrogen peroxide plus ferrous ion), especially. This inhibition was greately enhanced by the further addition of L-ascorbic acid. The enzyme was also inhibited by L-ascorbic acid and ferrous-EDTA system.

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The chemical structure of glycopeptide of mucilage in Hibiscus esculentus (Okura) was identified by chromatographies (thin layer, ion exchange resin and paper) -, dinitrophenylation-, enzymatic hydrolysis- and Edman degradation-techniques.
Peptide containing carbohydrate had glycine and serine as the N-and C-terminal amino acid residues, respectively.
The composition of the peptide was glycine, aspartic acid (or asparagine), threonine, serine and glutamic acid (or glutamine) as the amino acids, and glucose and fructose as the carbohydrates. The fact that threonine is located next to aspartic acid or asparagine in the peptide chain was discussed comparing with certain other glycopeptides. The identified amino acid sequence of peptide moiety of this glycopeptide in Okura was ; Gly-Asx-Thr-Ser-Glx-Ser.

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The influence of vitamin C sodium salt on the property of skim milk containing Milkase (composed of protease, amylase and lipase) was studied.
Relative viscosity of skim milk increased with addition of vitamin C sodium salt.
Degree of decomposition of protein in skim milk was measured by tyrosin method.
When 100, 200 and 300mg of sodium ascorbate was added respectively to skim milk (skim milk 22.0 g, water 180ml, Milkase 2wt% of skim milk), decomposition of protein in skim milk increased as the amount of vitamin C sodium salt increased. On the contrary, when 400 and 500mg of sodium ascorbate was added, decomposition of protein in skim milk decreased as vitamin C increased.
By optical microscope, decrease of despersion of skim milk particles was observed. Development of heterogeneity in colloidal portion was observed by electron microscope.

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Carbohydrates contained in dried banana peel, in the white substance inside the peel and in the pulp were investigated. Quantitative analyses showed that total sugar in the peel was 61.1%, in the white substance 46.5%, and in the pulp 79.6%. By color reaction, reducing sugar and ketose were detected as free sugars, and pentose, uronic acid, galactose and methylpentose were detected as the components of polysaccharides.Through investigations of the extracts by various solvents, galactose, galacturonic acid, glucose, arabinose, fructose and rhamnose were detected as the components of polysaccharides. Thus, it was presumed that the carbohydrates in each sample are composed of pectin, starch, hemicellulose, α-cellulose, β-cellulose and γ-cellulose besides free sugars. By the aid of different solubility in solvents, the pulp was divided into four fractions, namely, starch, soluble starch, dextrin and free sugars, and each content was calculated. By investigating the precipitate formed by lead acetate, rhamnose and glucose were detected as the components of glucosides in the peel and pulp.

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Previously the author reported a trial to inactivate gluten in medium strength wheat flour by heating (steam-heating) the flour, and it was found that the medium strength flour treated in such a way nears to soft-weak flour in respect of the amount of gluten extracted and the inflatable power.
In this report experimental cookery was carried out with the steam-heated medium strength flour. Sponge-cakes, pancakes, steamed bread and noodles were chosen for the experiments.
The result showed that the flour was very good for making Chinese buns, for instance, which desire that the action of gluten is lower but the taste due to gluten is retained.
On the contrary, it was found that a good result could not be expected from the flour in baking cakes where fineness or smoothness of texture is an important factor.

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We investigated the degree of bacterial pollution with marketed green pepper, lettuce and cucumber which were packed in film bags, and experimented with removing the bacteria by washing. The results obtained were as follows.
1. The degree of the bacterial pollution varied with samples but in general it was found to be unexpectedly high 21 × 10⁶ was the highest count for bacteria and 95 × 10⁴ was that for E. coli.
2. By two-minute gentle washing in a usual way which is adopted by household, 40-90% of bacilli were washed off from green pepper and lettuce, but only 5-40% from cucumber.
3. When the vegetables were washed gently in such a way as stated above, water with detergent worked more effectively than plain water.

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Comparative studies were pursued on the washability of various fabrics soiled by different kinds of particulate dirt and redeposition of the dirt to the fabric.
Tested fabrics were cellulose acetate, polyamide, polyacrylonitril, polyester, polypropylene and cotton. Carbon black, ferric oxinate, bentonite modified by oleophilic radicals and rouge (ferric oxide) were chosen as particulate dirt. Detergent solution contained anionic or nonionic surfactant with builders but no optical brightner.
The following results were obtained.
(1) From hydrophilic fabrics, hydrophobic particulate dirt was removed more easily than hydrophilic dirt and from hydrophobic fabrics hydrophilic dirt was easier.
(2) In nonionic detergent solution very slight redeposition was observed. The largest redeposition in these experiments was found on polypropylene fabrics with ferric oxinate and carbon black in the anionic detergent solution.

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Worn-out slips collected from homes were examined, and a method has been proposed for predicting the actual wearing process without performing wearing tests.
Thickness, air permeability change in color and strength were measured at each of 18 portions of worn-out slips. The same tests were administered to eight new slips after 68-day wearing under controlled conditions (including 20 launderings).
Significant correlation was found between two groups of the data obtained at each corresponding portion. General findings concerning the part and the, sort of damage are as follows : (1) thickness increases at front of the thigh and decreases at the seat, (2) air permeability increases at the seat, (3) change in color is comparatively small at the back and appreciable at the lower part of the seat, (4) pills are formed in the areas of belt and fastener of skirt, (5) strength decreases at the lower part of the seat and (6) the upper part of the seat stretches.

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1) Nine-hundred schoolchildren in Fukushima City were measured in July, 1966.
2) Compared with the average shown in the national statistics issued in 1966, schoolchildren investigated are a little taller and slightly slenderer.
3) Differences in stature, body-weight, chest girth and shoulder breadth between two neighboring grades are significant for each grade. The maximum difference is seen between 5 th and 6 th grades for girls and 8 th and 9 th grades for boys. Girls in the seventh grade are superior as for these items, and the ninth grade boys surpass girls as for all items.
4) On the whole, shoulders of junior high pupils are less sloping than those of elementary schoolchildren, and this tendency towards “square shoulders” is observed among the junior high boys. Girls' shoulders always are more sloping, and this sexual difference becomes obvious among higher graders.
5) Shoulder inclination has little correlation to stature, chest girth or shoulder breadth.

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Somatometric studies have been carried out to obtain the sizes and forms of parts of the body for each age group and also to find out a standard of measures of clothing.
In this report, 21 items relating with length were measured with each sex children between seven and fifteen years of age. Changes, with the growth, in body-forms, measurements of parts, and their indices were investigated.
The following results were obtained :
(1) Significant difference between two successive years of age, is seen until 14 years of age with the male and 13 with the female.
(2) The period of the most rapid increase in most of the items is 13-14 years of age with male and 10-11 with female.
(3) Values of indices gradually increase with age till 11 years old, except the index of total head height which decreases with age.
(4) With all ages values of indices of lateral malleolus height, the foot length and length of upper limb of male were greater than those of female. Values of indices of back height of waist and length of lower limb of male were smaller than those of female.

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In this report, 21 items relating with girth were measured to understand the changes in body-forms of each sex between the ages of seven and fifteen. The girth, breadth, depth and shape were investigated.
The following results were obtained :
(1) Both sexes have most significant difference between two successive years of age till 14 years old.
(2) The period of the most rapid increase in most of the items is 13-14 years of age with male, 11-12 with female.
(3) The difference in the ratios of depths of chest, waist and hip to respective breadths between male and female becomes significant around twelve years of age.
(4) The values of the correlations between girths of various parts and stature, chest girth, and weight show the highest with weight and the second with chest girth.
Since the correlation between girths and weight is high, we can estimate the measurements of girths from the weight.

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The development of textile industry has to do with the economic, social and cultural settings of the age. It sometimes happens that clothing material has considerable effect on the vicissitude of costume design.
The author tried to clarify the above conception, comparing various works concerning the development of silk manufacture and its trade at the Italian Renaissance.
This study shows the followings : 1) Florence silk textiles in the 15 th century satisfied not only the regional demand, but also the demand of the whole Europe. 2) The chief producing country of European silk textiles early at the Renaissance was Italy. 3) Italian, especially Florence silk gave a powerful impetus to the later development of European silk textiles.
Any grasp of Renaissance costume, therefore, cannot be complete without adequate consideration of Florence silk influence on it.

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The present work deals with shade of color, dyes, texture and sewing threads used on “uchiki” and “hakama”, as well as measurements of their various parts and the cutting method applied for them.
In order to work out the Munsell values of colors based on “Specification of Colors According to Their Three Attributes (JIS Z 8721-1963)”, the existing hues of the costumes were reproduced on the drawing-paper with water colors, and x, y and Y were obtained on them by photoelectric colorimeter.
As for the dyes, the water extracts of pulverized tatters of the costumes were compared with natural dyes by means of paper chromatography, then the used dyes were identified with the aid of “Wazome Kagami (A Standard Book of Japanese Dyes)” and “Wazome Kagami Ryakkai (An Exposition of the Process of Dyeing)”.
Data on measurements, texture and threads were obtained by the close investigation of the costumes, and the conjecture of the cutting was made by the minute study of the materials.

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In the previous report, it was conjectured that the infants' “Habe”, an endemic eczema and a kind of “milk crust” known among the inhabitants of Amami-Oshima, was closely related to the amount of garlic-salted pork taken by mothers during the nursing period.
The present study reports the result of the third survey made on informed, cooperative mothers to investigate relationships between the incidence of “Habe” and the kind of food taken by nursing mothers. The result appears to confirm that “Habe” is caused by heavy intake of salt, fat and pungent food by nursing mothers together with relatively insufficient intake of vegetables, the same as in the case of infant eczema.

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A questionnaire was administered to 477 married women who had college level educational background in an effort to find out conditions which facilitate wives' working out for a living. All samples graduated from either national or communal universities and about a half of them have their occupation.
The varieties of occupations of the working wives are rather limited. The occupation most frequently found among the samples is teacher of elementary school through college. The next is manager of small business and medical doctor.
Almost all of the samples have husbands who received college education. It is interesting that, independently of wife's educational background, more wives whose husband's income is comparatively low work together for a living. More wives who have their occupation live in urban districts, while wives who do not have their occupation live in the suburbs. Their resignation is motivated by marriage, pregnancy, delivery and husband's transference.

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The degree of companionship and the degree of interaction of school-children with their family members were reported in Part 1 and Part 2. In Part 3 the correlation of these two variables, companionship and interaction, is dealt with. The sample size is 793 in all, and 200 samples taken at random from the universe were used for the calculation of the correlation coefficients.
The correlation coefficients are in the range of 0.4+ 0.6. Therefore it has been ascertained that the two variables are in positive correlation, namely the covariance of the interaction and liking which was pointed out by G. C. Homans in his book “The Human Group” has been verified.
Findings on nine items concerning the situation of interaction are as follows.
The difference between boys and girls is significant with four items : the communication through helping the house chores and three other items.
The difference between nuclear families and extended ones is significant with four items : frequency of meeting of all family members at supper time and three other items.
The difference between groups classified by occupation is significant with five items : frequency of having a time for pleasure in the family and four other items.

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It is considered that the increase of net income in accordance with the growth of the national economy and the fluctuation of prices have given a considerable effect upon the consumption structure of households. An analysis is made to see how the relative prices and the net income of city households in postwar Japan have influenced the consumption structure.
For this purpose, the data (1947-1965) on the family income and expenditure collected by the Bureau of Statistics of Japanese Prime Minister's Office are used.
The results obtained are as follows :
As the net income increases, the relative percentage of outlay for food decreases; on the contrary, the sundries become greater. Therefore, a cross phenomenon between food and sundries was seen in 1963.
In future, the rapid rising of the prices of sundries is expected to give a great influence on the household. The gap between nominal and real percentages of outlay is fluctuated by relative prices. In money income quintile groups, the difference among the groups in the percentage of outlay becomes greater as relative prices go up.

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