The effects of poly (vinyl alcohol) (PVA) and sodium tripolyphosphate (STPP) on anti-deposition of oily soil in washing process have been investigated. The amount of oily soil (oleic acid and triolein) deposited onto fabrics (cupra, nylon and polyester), and the relative amount of the builders adsorbed on fibers (cellulose, nylon and polyester) were measured. The following results were obtained:
1) The relative amounts of PVA adsorbed on each fiber were all higher than those of STPP.
2) The deposition of oily soil onto cupra fabric was slightly observed in water without the builders. A marked effect of anti-deposition on nylon and polyester fabrics, however, was found in the builder solutions.
3) PVA was more effective for the anti-deposition of oily soil onto all fabrics than STPP. It is suggested that the marked effect of anti-deposition is resulted from stronger adsorption of PVA than STPP on all fibers.

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The washing of cotton-mattress has been developed and is gradually prevailing, but the detergent effect is unknown. Contamination and detergency of eight used and two unused cotton-mattress have been analyzed on insoluble substance, water-soluble substance and oily-soluble substance. The results are as follows:
1) An insoluble subustance is removed more effectively by beating than by washing, but the cleaning effect is not just as same as that of new cotton mattress.
2) A water-soluble substance is removed more effectively by washing than by beating.
3) Some oily-soluble subustances are removed to some degree both by washing and by beating method, but oil content of cotton fiber is little removed by washing.
4) The degree of mattress soil depends upon living environment, how to use and metabolism of human body. Washing is effective for removal of any type of soil, but only one cycle of washing cannot remove all soil.

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To investigate the mobility, we measured 6 types of lower body motion such as walking and stepping, and studied each motion as a series of 20 separate movements.
From the trace of measuring points, we checked the characteristics of the continuous deformation of lower body.
From the volume of movement of measuring points, we analyzed the numeric date of the continuous deformation.
The results were:
1) A special characteristics of deformation was recognized at bending of the knee. In moving the body back and forth, regio gluteus, regio patellaris and regio malleolaris laterails also moved upward in the direction of movement proportional to the bending of knees.
This upwared movement was also observed at gluteae point as the degree of bending became larger.
2) In moving the body up and down, regio patellaris moved back and forth as regio gluteus stretched and regio inquinalis shrinked.
3) From the volume of movement of measuring point, we could confirm the same results as 1) and 2) by numeric date.
4) There was a high correlation between the volume of movement and knee bending angle<θ₂.

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