Sageret, origin and varieties of the cherry, i. 347-348;
origin of varieties of the apple, i. 350;
incapacity of the cucumber for crossing with other species, i. 359;
varieties of the melon, i. 360;
supposed twin-mongrel melon, i. 391;
crossing melons, ii. [108], [129];
on gourds, ii. [108];
effects of selection in enlarging fruit, ii. [217];
on the tendency to depart from type, ii. [241];
variation of plants in particular soils, ii. [278].