Seasonal changes in the body weight (wet and dry) and gonad of the blue mussel (Mytilus edulis) were studied on specimens collected from littoral beds at Saitozaki of Hakata Bay.
The body weight increased from May to reach a maximum in July and decreased rapidly after November to reach the minimum in December. The changes in weight closely followed the spawning and gonadial cycle.
The developing period of the gonad in the mussel covered September and October, and spawning took place from November to next March. During the summer, there were no gametes in the mantle's gonad and connective tissue developed well in the mantle.
It is considered that mussels are in season for the table from June to August in northern Kyushu in view of the fact that most soft parts are edible.

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A piece of wet cotton cloth (10 × 10 cm²) was hung on a balance scale in a thermostatic oven, under six different thermal conditions (from 20 to 70 °C at 10 °C intervals), and at the same time the temperature of the cloth was directly measured by means of a CA thermopile attached to the cloth near its lower hem. Judging from the oven temperature, the cloth temperature, and the drying rate, it was found that the degree of drying could be known by the cloth temperature. Their relationship can be expressed by the following equation :
R_c=0.0074 (T₀-T_c) -0.02
where R_c stands for the drying rate during the constant drying-rate period (C.D.R.P.) (g/100 cm².min). T₀ for the oven temperature, and T_c for the cloth temperature during C.D.R.P. at the point of the cloth 1 cm above the lower hem at the middle of the cross length. The moisture regain at the time when the cloth temperature begins to rise is slightly smaller than at the end of C.D.R.P., because the cloth temperature does not begin to rise until a little after the end of C.D.R.P.

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Effective thermal conductivity is closely related to thermal insulation performance of fabrics and therefore is important as one of basic thermal properties of fabrics. In this research, in order to understand the factors which influence on effective thermal conductivity of fabrics, the measurement was carried out for many kinds of fabrics using the apparatus developed by Kawabata and effective thermal conductivities were obtained both by the steady state method and the transient method. As a result, the range of effective thermal conductivity value for many kinds of fabrics was obtained and the influence of type of fiber, yarn structure, fabric structure etc. on effective thermal conductivity of fabrics was confirmed experimentally.

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Effective thermal conductivity of fabrics is related to thermal insulation performance and comfort of wet clothing. In this research, in order to investigate the influence of type of fiber, fiber structure, yarn structure, fabric structure etc. on effective thermal conductivity of fabrics under wet condition, the measurement was carried out for many kinds of wetted fabrics by the transient method using the apparatus developed by Kawabata. As a result, effective thermal conductivity of fabrics under wet condition is increased with increasing moisture regain and it was confirmed experimentally that the influence of type of fiber on the behavior of effective thermal conductivity vs. moisture regain under wet condition is more remarkable than under the standard condition.

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From the 1960's to the 1970's, the Japanese economy had achieved its remarkably high level of development and the national income and consumption level had rapidly reached its standard point. During the years from 1966 to 1963, the continuous good harvest brought a situation of overproduction and caused a severe production adjustment. In 1973, the so-called oil-shock caused changes in agricultural management and the farming circumstances became very difficult to the farmers.
The author analyzed the 10-year family budget of the N farming family from 1969 to 1979 with regard to the above mentioned economic background in Japan. The results were as follows :
1. The nominal family budget increased four times during the 10-year period, but the marked rise in the consumer price actually caused an increase in their family budget, which was not only lower than the national average but also the prefectural one, per head of each family member.
2. According to the itemized list of the budget in the former half of the 1970's, fuel and light and clothing expenses in the family budget increased markedly; on the other hand, since 1975, in the latter half of the 1970's, housing expenses increased markedly, as well.
3. Since 1975, the consumption contents had become rapidly urbanized and higher than the common farmers' consumption contents.

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