. A text-book of botany for secondary schools. Botany. 176 A TEXT-BOOK OF BOTANY antiseptic, and in such bogs there are often found almost perfectly preserved specimens of ancient trees or their parts and sometimes of mired animals. Peat is extensively used for fuel, being cut into bricks and allowed to dry. The less decomposed peat is brown, and the more completely decomposed is nearly black. It is not formed to any large extent in warm countries, probably on account of the rapid decay of vegetation; but in the cooler parts of the globe it has been formed in very large masses. All through nor
. A text-book of botany for secondary schools. Botany. 176 A TEXT-BOOK OF BOTANY antiseptic, and in such bogs there are often found almost perfectly preserved specimens of ancient trees or their parts and sometimes of mired animals. Peat is extensively used for fuel, being cut into bricks and allowed to dry. The less decomposed peat is brown, and the more completely decomposed is nearly black. It is not formed to any large extent in warm countries, probably on account of the rapid decay of vegetation; but in the cooler parts of the globe it has been formed in very large masses. All through northern Asia and Europe, and in the northern United States and Canada, there are millions of acres of peat; but little use has been made of it 3'et in the United States. Its ex- tensive use in Ireland is well known, but there it is more apt to be called turf than peat. 102. Life-history of a Moss.—The conspicuous part of an ordinary moss plant consists of a more or less erect and usually branching stem bearing numerous delicate leaves (Fig. 170, .4). This plant is c^•idently able to make its own food, and it is anchored to its substra- tum by hair-like rhi- zoids. Its power of vege- tative propagation has been tiescribed, but it produces no spores. At certain times, however, there usually appears at the end of the main stem or at the end of a branch a rosette of. Fig. 170.—An ordinary muss plant, showing tile leafy stem (,A) with its rhizoids, and a rosette (S) containing 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 Coulter, John Merle, 1851-1928. New York, D. Appleton
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1906
