In the "Setsuyo gundan" (a topography of Settsu province)" written by Keishi OKADA (published in 1701), there is the description; 'There is a special soil for torinoko paper in Najio. This soil is mixed with torinoko paper during the paper-making process and it makes the paper more beautiful.'
岡田渓誌著『摂陽群談』（元禄14年（1701年）刊）には、「名塩鳥の子土、同所にあり。この土を設け鳥の子紙に漉き交え美を能くす」とある。