As a teaching material for the household course in primary school, a few hours are given for sewing coverings. Pupils wanted and agreed to sew pillow-coverings, and the material for the coverings was examined from the angle of hygiene, especially of removing dirts. the following three. We made examinations : (1) surface reflexibility, (2) chlorine ion fixed quantity test, (3) ammonia with broade cloth, terry cloth, tetoron, cuprammonium rayon and polypuropilene. Results of the examinations 1) Terry cloth is the most hygienic and easy to remove dirts. 2) Compared with girls, boys become more dirty, and seasons have much relation with this. 3) About starching For adults, starching is necessary. But for babies, as they easily get dirty, starching is not hygienic and washing every day is more necessary. For a teaching material, it has been found that in sewing pillow-coverings a broad cloth is suitable both for teaching basic sewing and the hygienic point of view.
