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The following extract from Hugh Macmillan's 'Bible Teaching in Nature' suggests both sermon-topic and illustration, and the peculiarities noticed are fresh and unfamiliar: "The mountain grasses grow spontaneously; they require no culture but such as the rain and the sunshine of heaven supply. They obtain their nourishment directly from the inorganic soil, and are independent of organic materials. Nowhere is the grass so green and vigorous as on the beautiful slopes of lawn-like pasture high up on the Alps, radiant with the glory of wild flowers, and ever musical with the hum of grasshoppers, and the tinkling of cattle-bells. Innumerable cows and goats browse upon them; the peasants spend the summer months in making cheese and hay from them for winter consumption in the valleys. This exhausting system of husbandry has been carried on during untold centuries; no one thinks of manuring the Alpine pastures; and yet no deficiency has been observed in their fertility, though the soil is but a thin covering spread over the naked rocks. It may be regarded as a part of the same wise and gracious arrangement of Providence that the insects which devour the grasses on the Kuh and Sehaf A1pen, the pasturages of the cows and sheep, are kept in check by a predominance of carnivorous insects. In all the mountain meadows, it has been ascertained that the species of carnivorous are at least four times as numerous as the species of herb-eating insects. Thus, in the absence of birds, which are rare in Switzerland, the pastures are preserved from a terrible scourge. To one not aware of this check, it may seem surprising how the verdure of the Alpine pastures should be so rich and luxuriant, considering the immense development of insect-life. The grass, whenever the sun shines, is literally swarming with them - butterflies of gayest hues, and beetles of brightest iridescence; and the air is filled with their loud murmurs. I remember well the vivid feeling of God's gracious providence which possessed me when passing over the Wengern Alp, at the foot of the Jung Frau, and seeing, wherever I rested on the green turf, the balance of nature so wonderfully preserved between the herb which is for man's food, and the moth before which he is crushed. Were the herbivorous insects allowed to multiply to their full extent, in such favorable circumstances as the warmth of the air and the verdure of the earth in Switzerland produce, the rich pastures which now yield abundant food for upwards of a million and a half of cattle would speedily become bare and leafless deserts. Not only in their power of growing without cultivation, but also in the peculiarities of their structure, the mountain grasses proclaim the hand of God. Many of them are viviparous. Instead of producing flowers and seeds, as the grasses in the tranquil valleys do, the young plants spring from them perfectly formed. They cling round the stem, and form a kind of blossom. In this state they remain until the parent stalk withers and falls prostrate on the ground, when they immediately strike root and form independent grasses. This is a remarkable adaptation to circumstances; for it is manifest that were seeds, instead of living plants, developed in the ears of the mountain grasses, they would be useless in the stormy region where they grow. They would be blown away, far from the places they were intended to clothe, to spots foreign to their nature and habits, and thus the species would speedily perish." Ruskin says, "Look up to the higher hills, where the waves of green roll silently into long inlets among the shadows of the pines, and we may perhaps know the meaning of those quiet words of Psalm 147:8." - R.T.

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KJV: Who covereth the heaven with clouds, who prepareth rain for the earth, who maketh grass to grow upon the mountains.

WEB: who covers the sky with clouds, who prepares rain for the earth, who makes grass grow on the mountains.