The change of detergency of particulate soil adhered to cloths together with fatty soil, when the fatty soil was autoxidated owing to aging, was studied. Lard and ferric oxinate (Fe-Ox) were used as models of fatty soil and particulate soil, respectively. Test cloths used were cotton fabrics and polyester fabrics. The results obtained were as follows; (1) Recoveries of lard and Fe-Ox adhered individually to cloths were about 100%, irrespective of the kind of fibers and aging period of days. On the other hand, the recovery of Fe-Ox on the cloths tainted with mixture of lard and Fe-Ox decreased markedly as aging period of days passed, while that of lard was about 100% in each case. (2) The effect of aging on the detergency of Fe-Ox adhered individually to cloths was not recognized. (3) The detergency behavior of lard on the cloths tainted with mixture of lard and Fe-Ox was similar to that of lard adhered individually to cloths. And the detergency of Fe-Ox coexisted with lard resembled that of lard on the same soiled cloths.

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The purpose of this investigation is to reveal the role of the micro-climate inside clothing in the regulation of body temperature when one moves from a high temperature environment (30°C), to a low temperature environment (20°C), and vice versa. The temperatures and humilities inside clothing at the back, the skin and oral temperatures, and aweat rate were measured wearing different coverage clothing. The following results have been obtained.
The change of the temperature in the first layer inside clothing was smaller than those of the second and third layers. The clothing is effective in maintaining the micro-climates inside clothing at a constant and comfortable level against changes in temperature of the environment. The skin temperatures at the bare thigh and leg were lower than those at the covered thigh and leg. No differences in temperature inside clothing and oral temperature were caused by different clothing.
In the 20°C environment, the subjects wearing clothing with a larger coverage area felt warmer and more comfortable. When one moves into an air-cooled environment from a hot environment, from the psychological standpoint, it is preferred to use clothing which covers not only the trunk but the arms and the legs as well.
Sweating occurred in the 30°C environment. The amount of sweat decreased in the 20°C environment. The humidity inside clothing is influenced by the environmental moisture content and the amount of sweat. At the high temperature environment, the increase of the humidity inside clothing with sweating caused uncomfortable wet sensation. The differences in the sweat amount, the humidity inside clothing, and the wet sensation by the clothing were not statistically significant.

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The amount of salt has been determined in the wadding of four kinds of mattress used for long years, assuming that the water-soluble soil is salt. The removal aspect has been investigated by determining the salt contents in the waste water and in the newer mattress. The following results have been obtained:
1) Approximately 80% of salt in the wadding has been removed by the washing. Higher removing efficiency has been achieved for newer mattresses which has undergone a usage for a short period of time.
2) A large quantity of salt has been dissolved for five to thirty seconds after beginning of washing. Almost all salt has been dissolved for the first sixty seconds.
3) The washing with a brushing is effective not only for cleaning of face of mattress, but also for removal of soil in the wadding.
4) The amount of water-soluble dirts in the wadding may be estimated from the amount of soil in the waste water during the rinse.

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By the application of factor analysis to the foot data of 332 children of 3 to 6 years old for explication of the principal factors of the fore part of foot, the author discussed the differences of sex or age in each factor, the classification of toe types and the probability density of each type. The results were as follows:
1) The 1st, 2nd, 3rd and 4th factors signify the ratio of each toe length to foot breadth, the ratio of each length of the 3rd, 4th and 5th toes to the 2nd toe, both the ratio of inside half foot breadth to outside half foot breadth and the 1st toe angle and the ratio of the 1st toe length to the 2nd toe, respectively.
2) Comparing the differences between the sexes, the ratio of each length of the 1st, 2nd, 3rd, 4th and 5th toes to foot breadth and the ratio of the 1st toe length to the 2nd toe are significantly higher in the females than in the males.
3) Comparing the differences between the 3.0-4.5 age and the 4.5-6.0 age groups, the ratio of each length of the 1st, 2nd, 3rd, 4th and 5th toes to foot breadth and the variation of the 1st toe angle are significantly higher in the 4.5-6.0 age group than in the 3.0-4.5 age group but the ratio of the 1st toe length to the 2nd toe is significantly lower in the 4.5-6.0 age group than in the 3.0-4.5 age group just in the case of males.
4) Among the toe types classified by using the three factors, the type with medium scores in all the factors shows 31.8% as the highest probability density.

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