But whether lawns could exist at all without the beneficent work of the earthworms is very doubtful. Every one has seen the little heaps of worm-castings upon grass, but it remained for Darwin, after his own long experiment and exhaustive observation, partly based upon and comprehending the conclusions of other naturalists, to tell us how largely the fertility of our surface soil is due to the unceasing work of these small creatures. Worms swallow large quantities of earth and decaying leaves, and Darwin's observations led him "to conclude that all the vegetable mould over the whole country has passed many times through, and will again pass many times through the intestinal canals of worms." This, indeed, is the only way in which it is possible for a person with any knowledge of the needs of plant-life, to conceive the possibility of any one closely-packed crop occupying the same space of ground for hundreds of years. The soil, as it passes, little by little, through the bodies of the worms, undergoes certain chemical changes which fit it afresh for its ever-renewed work of plant-sustenance.   

There are some who, viewing the castings as an eyesore on their lawns, cast about for means of destroying the worms. This is unwise policy, and would soon lead to the impoverishment of the grass. The castings, when dry, are easily broken down by the roller or the birch-broom, and the grass receives the beneficent top-dressing that assures its well-being and healthy continuance.   

The only part of the garden at Auchincruive that is obedient to rectangular form, is the kitchen garden and the ground about it. The kitchen garden lies some way back from the house and river, and, with its greenhouses, is for the most part hidden by two long old yew hedges which run in the direction of the river. One of these appears in the picture, with its outer ornament of bright border of autumn flowers. Here are Tritomas, Gypsophila in mist-like clouds, tall Evening Primrose and Campanula pyramidalis, both purple and white, with many other good hardy flowers.   

The red-leaved tree illustrates a question which often arises in the writer's mind as to whether trees and shrubs of this coloured foliage, such as Prunus Pissardi and Copper Beech and Copper Hazel are not of doubtful value in the general garden landscape. Trees of the darkest green, as this very picture shows by its dark upright yews, are always of value, but the red-leaved tree, though in the present case it has been tenderly treated by the artist, is apt to catch the eye as a violent and discordant patch among green foliage. Especially is this the case with the darker form of copper beech, which, in autumn, takes a dull, solid, heavy kind of colour, especially when seen from a little distance, that is often a disfiguring blot in an otherwise beautiful landscape.   

The same criticism may occasionally apply to trees of conspicuous golden foliage, but errors in planting these, though often made, may easily be avoided by suitable grouping and association with white and yellow flowers. Indeed it would be delightful to work out a whole golden garden.