text:  Upon seed-potatoes which have these last two or three years attracted so much attention we have the following passage:-- "I have no doubt in my own mind that were seed-potatoes securely pitted until they were about to be planted --not over-ripened before they were taken out of the ground --the sets cut from the crispest tubers and from the waxy end --the dung fermented by a turning of the dunghill in proper time --led out to the field quickly spread the sets as quickly dropped on it and the drills quickly split in the manner represented in fig