SMOOTH VS. ROUGH POTATOES.
Other things being equal, smooth potatoes are preferable to those with deeply-sunken eyes. The starch being most abundant near the skin, not so much is lost by the thin paring of the former as by the necessarily deeper paring of the latter.
Varieties usually well formed sometimes grow so knobby and ill-shaped as to be scarcely recognized. This is caused by severe drought occurring when the tubers are about two thirds grown, causing them to partially ripen. On the return of moisture, a new growth takes place, which shows itself in knobby protuberances.