With the boom in real estate arrived, people everywhere are moving into new homes and those who are not moving are looking over their gardens with an eye to changes to be made this fall. It is time to transplant iris, to move clashing colors, to put in height and color accents here and there. It is exactly the time of year to feature books on Garden Design--a good book which presents garden plans can save years of struggle and disappointment beside the cost of remaking an unsatisfactory garden. This is an English book--and it is the English Garden which is especially adaptable to American needs. There are great estates, small country houses and gardens for glades, woods and rocks, borders, etc. The sale of this type book depends on the enthusiasm and knowledge of the salesperson. Talk it up and explain why it is so necessary.