MAP OF CANAL ZONE _At end of volume_ (Showing also profile of Canal, cross section of Culebra Cut, the borings below Gatun dam, and the cross section of Gatun dam as designed in April, 1908. The design of this dam, however, is still undergoing modifications) INTRODUCTION AT the present moment the Canal Zone of the Isthmus of Panama is the most interesting place in the world. Here is gathered an army of 40,000 men engaged in the epoch-making work of uniting the Atlantic and Pacific Oceans, and here is the greatest collection of machinery ever massed for the accomplishment of one undertaking. If the present rate of progress continue unchecked, the Canal, it is calculated, will be opened in 1915. Then will that Isthmus, which has hitherto been a barrier between two oceans but has failed to act as a bridge between two continents, be pierced by a waterway capable of floating the largest ships now built or building. Then will the Pacific coasts of the Americas be accessible from ports on both sides of the Atlantic without the necessity of a voyage by the Straits of Magellan. Then will the distance from New York to San Francisco be shortened by 8,400 and that from Liverpool by 6,000 miles; the distance from New York to South American ports will be shortened by an average of 5,000 and that from Liverpool to these ports by an average of 2,600 miles: then for the first time Yokohama on the north and Sydney on the south will be brought nearer to New York than to Liverpool or Antwerp, and then will New Orleans and the ports on the Mexican Gulf be brought nearer than New York, by sea, to San Francisco, South America beyond Pernambuco, Australia, and Japan. [Illustration: STATUE OF COLUMBUS, CHRISTOBAL, COLON.] [Illustration: CHRISTCHURCH, COLON.] No one who cares to know the greater things which are shaping the world can now afford to be ignorant of what is happening on the Isthmus of Panama. In the former days of unstable companies the student of affairs might decline to occupy himself in the study of an undertaking of which the fruition was doubtful. Now, however, that the Government of a great nation have put their hands to the plough the furrow will be driven through. The United States have acquired complete ownership and control of the Canal and of a strip of land five miles wide on either side, called the Canal Zone. The small State of Panama, in which this zone is situate, has placed itself under the protection of the United States. The Government of Great Britain has by a treaty ratified in 1901 waived the treaty right which it formerly enjoyed to share with the United States the control of any trans-Isthmian canal. The Isthmus has been freed from those pestilences which were the greatest obstacles to human effort, and the engineering difficulties are no longer beyond the scope of modern science. * * * * *