Tree planting -- The walnut grove -- Farm animals to benefit the trees -- The enemies of the walnut tree -- Walnut varieties -- The black walnut -- Trees in other parts of the world ; diseases -- The timber -- The walnut and the manufacture of guns -- The leaf and the nut -- The summer and husbandry -- The ripe walnuts -- French and other walnut growers -- Cracking the nut and preparing for sale -- Walnut oil -- Walnuts as food -- The autumn and winter -- The health issue -- Art and the walnut.