. The great world's farm; some account of nature's crops and how they are grown. Natural history. Leaves and their Work i6^ these are all carbon compounds; so that altogether the pound of flour contains some seven ounces of carbon. Some of 'the palms, as the sago palm, use very large quantities of carbon in forming the starch of their pith : one tree, for instance, often yielding the extra- ordinary amount of 800 lbs. of starch. All the sugars, oils, gums, caoutchoucs, of the vegetable world, contain large quantities of carbon, and so also do the fibres of cotton, flax, hemp and others. But, a


. The great world's farm; some account of nature's crops and how they are grown. Natural history. Leaves and their Work i6^ these are all carbon compounds; so that altogether the pound of flour contains some seven ounces of carbon. Some of 'the palms, as the sago palm, use very large quantities of carbon in forming the starch of their pith : one tree, for instance, often yielding the extra- ordinary amount of 800 lbs. of starch. All the sugars, oils, gums, caoutchoucs, of the vegetable world, contain large quantities of carbon, and so also do the fibres of cotton, flax, hemp and others. But, as already said, carbon forms part of the. Surface leaf-cellS; with pores, magnified. structure of every portion of a plant from root to seed, and it enters largely into the composition of the skeleton, or frame-work, both of stems and leaves ; for a plant's skeleton consists of fibre, identical in com- position with the fibres of the cotton and other plants used for weaving purposes. Now, both the skeleton and the flesh of a plant, every part of it, indeed—roots, stems, leaves, flowers, fruit, seed—consists either of a single cell, ,or of an assemblage of cells, which may be compared with the. 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 Gaye, Selina. New York [etc. ] The Macmillan company


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky