PART TWO TeE FiELD oF TRANSPORTATION CHAPTER THIRTEEN MEANS OF TRANSPORTATION EVERYTHING that people need must be brought — that is, transported — from where it grows or is manufactured to where it is consumed. In different parts of the world the means of transportation vary greatly. The jungle tribes of Africa and India, for instance, carry practically everything in their hands or on their heads. In a civilized community conditions are far less simple. Probably groceries are brought to your house by horse and wagon, while a man on foot brings the mail. A motor truck may bring furniture ; the florist’s messenger may come by electric car; coal may be hauled by a mule team. In most of these cases we see only the last part of the journey; earlier parts may have been made by railroad, or perhaps, for articles like tea and coffee, in steamships. THE CHIEF MEANS OF TRANSPORTATION In the order in which they came into use, the six most important means of transportation are: (1) man; (2) horses and other animals ; (3) ships; (4) railways; (5) automobiles; (6) airplanes. How man is used for transportation in backward countries. In primitive parts of the world, such as Africa, India, and China, men move the world’s commerce long distances as well as short. In ad- vanced countries, however, man power is used only for short distances. Such work is very expensive. For men to move a ton of goods a mile in one of our great cities would probably cost four or five dollars. Nevertheless, there is no part of the world where man power is not used extensively. In central Africa a traveler who goes beyond the terminals of the railroads must often have his baggage transported on the heads of natives. In some places beasts of burden cannot be used because of disease-bearing insects that thrive in the hot, humid climate. Hence the ivory and the forest products of central Africa are carried on the heads of straggling lines of lightly clad natives. Among the Hima- layas similar lines of carriers, clad in heavy quilted garments and straw sandals, tramp through the snow and slush with cloth, tea, and dates 159