Nature Study Lessons; Seasonally Arranged

Nature Study Lessons; Seasonally Arranged

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...(c) cabbage, (d) savoy, (e) kale? SPRING CHAPTER VII CAUSES OF GERMINATION Material and apparatus required. For demonstration. One ounce of white mustard seed.-Five 4-inch pots. Dry soil to fill one pot. Potting soil in ordinary condition to fill the other four. One glass jar. One plate or saucer. Cotton-wool or small piece of flannel or a little sawdust. Bell-jars or glass shades to cover the separate experiments. Two thermometers. not indis-pensable One of the commonest ways of getting new plants is to sow seed. In the soil a seed begins to sprout, a root is sent out, fresh green leaves appear above the surface and we say the seed has germinated. Under the name of germination we include the first stages of the wonderful development of a complete new plant from the simple embryo enclosed in the seed. It is not diflicult to say with what season germination is specially associated. Summer is the time of flowers, autumn of fruit, winter of resting seeds and closed buds, and spring of seedlings and shoots. Spring is above all a season _of awakening. It is the morning of the year when the sun comes back from his visit to southern climes, bringing light and heat once more. The butterfly comes out of its chrysalis, eggs are hatched in the nest, tadpoles wriggle in the pool, buds break into green leaves, and the sleeping plant inside the seed answers like the rest the call of spring, comes out into the sun and vigorously grows. ' In our own country, where the weather is so variable at all times, this wonderful renewal of activity, both in the animal and vegetable world, does not produce the same ocular efiect as in some other regions, where the seasons are more clearly marked off from one another. In the steppes for example, white sheeted winter...
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Product details

  • Paperback | 38 pages
  • 189 x 246 x 2mm | 86g
  • English
  • Illustrations, black and white
  • 1236750632
  • 9781236750631