. Champ, forêt et ferme ; les choses intéressantes pour les jeunes amoureux de la nature, y compris certaines questions du moment pour les jardiniers et les cultivateurs de fruits. Histoire naturelle ; l'Agriculture. Amidon 95 tubercules-lem artichaut, les tubercules d'ar- bourgeons qui vont deux par deux sur l'autre, d'avant en arrière et de droite à gauche à son tour, exactement comme le sont les feuilles et les bourgeons sur la tige. "La pomme de terre nourrit ses bourgeons sur une sub- stance farineux appelé fecula ou, à moins d'apprendre la langue, de l'amidon. C'est la matériel qui rend le vege- table si riche en vitamines pour nous. Nous passons à notre propre compte ce que l'usine tbe

• Contributeur: The Book Worm / Alamy Banque D'Images
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. Field, forest and farm; things interesting to young nature-lovers, including some matters of moment to gardeners and fruit-growers. Natural history; Agriculture. TUBERS—STARCH 95 lem artichoke, the tubers of which have buds ar- ranged two by two on opposite swellings, from front to back and from right to left in turn, exactly as are leaves and buds on the stem. "The potato feeds its buds on a farinaceous sub- stance called fecula or, in less learned language, starch. It is the very material that makes the vege- table so rich in nutriment for us. We turn to our own account what tbe plant has stored up for its young shoots. Starch is con- tained in the extremely small cavities with which the flesh of the tuber is all riddled. These cavities are called cells. They are microscopic sacs made of a iine membrane and having no opening. rh ( o, Crammed full of starch grains and Pot8to crowded one against another, they compose the fleshy substance of the potato. But these cavities are so small that a person would strain his eyes in vain in any attempt to see them in the cross-section of a potato. A magnifying glass is necessary. So minute are the cells that in a piece of potato no larger than a pin's head there*is room for dozens and doz- ens of them. This picture -shows you, but much larger than in nature, a potato cell with the grains of starch it encloses." "How beautifully, " exclaimed Emile, "those grains of starch are arranged in their little cubby- hole ! They might be taken for a nest of eggs. And you say there are heaps and heaps of these little starch cells?". Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fabre, Jean-Henri, 1823-1915; Bicknell, Florence Constable, tr. New York, The Century Co.

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