209 Modern Business Geography almost exclusively with their much needed manufactured goods. [t is surprising to note on the map, or better on a globe, how nearly the Pacific coast of South America lies due south from the Atlantic coast of North America. Florida seems to point directly to the Panama Canal and the west coast of Colombia, Ecuador, Peru, and Chile. The canal protects the United States in war. If the United States should ever go to war again, the Panama Canal would enable the Atlantic and Pacific battleship fleets quickly to unite on either coast. (4) QUESTIONS, EXERCISES, AND PROBLEMS A. The ships of a great port. 1. From the New York Times or some other newspaper that gives shipping news, clip the list of steamships arriving in New York. Indicate on an out- line map the starting point of each ship. Compare the length of time of their voyages. Pick out three that you think are tramp steamers, and explain your choice. What might reasonably be supposed to be the cargo of each of the ships arriving? Other geographies or an encyclopedia may help you to make reasonable suppositions. Make entries in your notebook in this way: NAME oF Surp Port oF DEPARTURE Columbia Bristol. England PossiBLE CARGO Coal : and steel manufactures SaiLing TIME 18 days 3. A steamship company must pay for the following expenses and equip- ment: (a) hulls and their fittings; (b) engines and other machinery; (c) fuel; (d) wages of crews; (e) wharves and docks; (f) agents, office expenses, and advertising. What corresponding items does a railroad pay for? What extra expenses must it meet that make trans- portation by rail more expensive than by steamship? The North Atlantic liner route is mapped out on a double-track plan for eastbound and westbound vessels. What is the advantage of this? Both lanes are shifted southward at a certain season. When is this done. and why? B. The study of a harbor. {. A great deal is done to make harbors safe and convenient for shipping. Is this done by the United States, the local municipal government, or the state government? What are ‘‘ port works”? Explain: buoy, light- house, jetty, breakwater, channel. Why must dredging and blasting be done in some harbors? The Coast and Geodetic Survey, Washington, D. C., has maps of some ports. Let a member of the class write for a map of the port with