To raise from seed, gather the balls after they have matured, hang them in a dry place till they become quite soft, when separate the seeds and dry them as others, and plant as early as the temperature of the soil favors vegetation. Chance varieties from seed of balls left to decay in the fall, as tomatoes, are recorded. Probably our present best varieties had such an origin. Raising new varieties requires much care and patience. Keep each one separate, plant only the best, and then you must wait four or five years to determine whether, out of a thousand, you have one good variety. _Varieties._--These are numerous. Those best adapted to one locality, are often inferior in another. That excellent potato, the Carter, so firm in New England and western New York, is ill-shapen and inferior in many localities in Illinois. The Neshannock or common Mercer produces a larger yield in Illinois than in the Eastern states, but of a slightly inferior quality. Most seeds do better transported from a colder to a warmer climate, but with the potato the reverse is true. The best potatoes of Ireland are usually inferior in the warmer latitudes of this country. In ordering potatoes for seed it is better to describe the quality than to order by the name. We omit any list, of even the best varieties. They are known by different names, and are not equally good in all localities. And all varieties are scattered over the whole country, very soon, by dealers, and through the agency of agricultural societies and periodicals. Different varieties should be kept separate, as they look better for market, and no two will cook in precisely the same time. _Plant the large potatoes and plant them whole._ From a small eye or a small potato to the largest they will vegetate equally well. And in a wet, cool season, the small seed will produce nearly as good a crop as the large. But the large seed matures earlier, and in a dry season produces a much larger crop. The moisture in a large potato decaying in the hill, is of great use to the growing plants, in a dry season. It is also generally conceded that potatoes growing from cut seed are more liable to be affected by the rot. _Quantity of seed per acre._--The practices of farmers vary from five to twenty bushels. It takes a less number of bushels per acre when the seed is cut. The quantity is also affected by the size of the seed, the larger the potatoes the more will it take to seed an acre.