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Rh under a hot sun or drying wind, and the whole surface is disfigured by ugly seams. The gaping fissures have then to be filled with sifted soil and sown with seed.

The objection most frequently urged against turf is its almost prohibitive cost. When cut to the usual size—3 feet long by 1 foot wide—nearly fifteen thousand pieces are required to lay an acre. The expense, including cutting, carting, and laying, generally falls but little short of £100. For the same area, seed of the highest quality can be obtained for about £5 unless for some urgent reason an unusual quantity is sown; even then, an increased outlay of 50s. will suffice.

The labour involved in levelling the land and preparing a suitable surface is substantially the same for both methods.

A sward produced from a mixture of suitable seeds is incomparably superior in quality to the best turf generally obtainable. Seeds of fine and other useful grasses are now saved with all the care necessary to ensure the perfect purity of each variety. The presence of extraneous substances of any kind, and of false seeds in particular, can be instantly detected. The percentage of vitality is also determined with exactness by severe and reliable tests. The several varieties of grasses can therefore be mixed in suitable proportions for any soil or purpose with the precision of a physician's prescription.