. The beauties of nature and the wonders of the world we live in. Natural history; Physical geography; Astronomy. 124 THE BEAUTIES OP NATURE flower (Fig. 6) consists of a narrow tube, some- what expanded at the upper end (Fig. 7), where the lower lobe forms a platform, on each side of which is a small projecting tooth (Fig. 8, m). The upper portion of the corolla is an arched hood (co), under which lie four anthers (a a), in pairs, while between them, and projecting some- what downwards, is the pointed pistil (st); the tube at the lower part contains honey, and above the honey is a row of hairs running round the tube. Now, why has the flower this peculiar form ? What regulates the length of the tube ? What is the use of the arch ? What lesson do the little teeth teach us ? What advantage is the honey to the flower ? Of what use is the fringe of hairs ? Why does the stigma project beyond the. Fig. 6.—White Drad-nettle.. 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.. Lubbock, John, Sir, 1834-1913. New York, London, Macmillan and Co.