Order I. Regular.
Order II. Irregular.
Section 1. Sweet.
Section 2. Sour.
Subsection 1. Pale or blushed, more or less, but self-colored and not striped.
Subsection 2. Striped or splashed. Subsection 3. Russeted.
Class II. Conical, tapering decidedly toward the eye, and becoming ovate when larger in the middle and tapering to each end, the axial diameter being the shorter. Subdivisions as above.
Class III. Round, globular, or nearly so, having the axial and transverse diameters about equal, the former often shorter by less than one quarter of the latter. The ends are often so flattened as to look truncated, when the fruit appears to be cylindrical or globular-oblate.
Subdivisions as above.
Class IV. Oblong, in which the axis is longer than the transverse diameter, or appears so. These may also be truncated or cylindrical. Subdivisions as above.
1849. John J. Thomas in his "American Fruit Culturist" arranged apples as follows: Division I. Summer Apples.
Class I. Sweet apples.
Section 1. Color striped with red. Section 2. Color not striped. Class II. With more or less acidity.
Sections 1 and 2 as above. Division II. Autumn Apples.
Classes and Sections as above. Division III. Winter Apples.
Classes and Sections as above.