The sugar-cane is also grown over immense fields in India. The juice contains 20 per cent of sugar. In Sanscrit, the old language of India, it is called _sakhara_. The Arabs, who introduced it to the Mediterranean coasts, called it _sukhar_. And thus it is called, with slight modifications, in all the languages of Europe and many of those of Asia. We must also not forget the countless palms which wave their crowns in the tepid winds of the monsoons. There are the date palms, the coconut palms, the sago palm, and a multitude of others. The sago palm, from the pith of which sago grains are prepared, is a remarkable plant. It flowers only once and then dies. This occurs at an age of twenty years at most. The soil of India supports many kinds of useful trees--sandalwood, which is employed in the construction of the finer kinds of furniture; ebony, with its dark wood; the teak-tree, which grows to a height of 130 feet, and forms immense forests in both the Indian peninsulas and in the Sunda Islands. It is hard and strong, like oak, and nails do not rust in it. It is therefore used in shipbuilding, and also frequently in the inside of modern warships. The sleeping and refreshment carriages of railway trains are usually built of teak. Lastly, there is the blue vegetable substance called indigo, which is obtained from small bushes or plants by a simple process of fermentation. It is mostly used to dye clothing, and has been known in Europe since the Indian campaign of Alexander. WILD ELEPHANTS The home of the wild elephant is the forests of India, the Malay Peninsula, Ceylon, Sumatra, and Borneo, while another species is found in Africa. They live in herds of thirty or forty, and every herd forms a separate community. The leader of the herd is a full-grown bull with large, strong tusks, whom all the others obey with the greatest docility. When they wander through the forest, however, or fly before danger, the females go in front and set the pace, for they alone know how fast their young ones can travel. Their senses of smell and hearing are remarkably acute; they are of a good-tempered and peaceable disposition, and do not care to expose themselves to unnecessary risks. They are therefore not very dangerous to man, unless when attacked; but man is their worst enemy.