THE first luxury we allowed ourselves on the farm was a collection of roses. We had put aside a sum of money for some necessary repairs, and when they were completed there were six dollars left, which we agreed to spend on the garden. One dollar went for perennial seeds, another for wistaria root. The remaining four were devoted to roses. We sent for an advertised collection of hardy roses, consisting of six two-year-old plants for one dollar and twenty cents, t............