"In Europe, particularly in England, the rock garden is an established institution with a distinct following. The English works on the subject alone form a considerable bibliography. On this side of the Atlantic, the rock garden is so little understood that it is an almost unconsidered factor in the beautifying of the home grounds. There are a few notable rock gardens in this country, all on large estates, and in more instances some excellent work has been done on a smaller and less complicated scale either by actual creation or by taking advantage of natural opportunities. But for the most part America has confined its rock garden vision principally to the so-called "rockery. ""