As the systems of Diel and Dochnahl, are certainly the best which have yet appeared, I have introduced them here, for the benefit of those who may want a groundwork on which to form an arrangement.
DIEL’S CLASSIFICATION.
CLASS I. RIBBED APPLES.
1. They are furnished with very prominent, but regular ribs round the eye, extending also over the fruit, but which do not render the shape irregular.—2. Having wide, open, and very irregular cells.
ORDER I. TRUE CALVILLES.
1. They taper from about the middle of the fruit towards the eye.—2. They are covered with bloom when on the tree.—3. They have, or acquire by keeping, an unctuous skin.—4. They are not distinctly and purely striped.—5. They have light, spongy, delicate flesh.—6. They have a strawberry or raspberry flavor.
ORDER II. SCHLOTTERÄPFEL.
1. The skin does not feel unctuous.—2. They are not covered with bloom.—3. They are either of a flat, conical, cylindrical, or tapering form.—4. They have not a balsamic, but mostly a sweetish or sourish flavor.—5. They have a granulous, loose, and coarse-grained flesh.