Abstract
From histochemical observation of boiled soybeans expelled into the faeces of 26 infants ages from four months to four years and four months, the following results have been obtained.
1. The soybean cells in the faeces are markedly swollen and the cell walls partly broken andfaded.
2. Protein and polysaccharide in the cell disappear from the outer layer of the cell contentsfirst, while a part of protein and polysaccharide seems to slip out of the cell.
3. The age when fat in the soybean cells disappears is younger than that when protein andpolysaccharide do.
4. Infants' ability in digesting soybeans seems to increase with age, though some individuality of the ability is observed.
