Duncan E. McKinlay, a California congressman who visited the Canal Zone with the House Interstate Committee, frames the Panama Canal as a project of paramount importance to the Pacific coast and the realization of Columbus's dream. His 1912 account, published before the canal's 1915 opening, blends boosterism with detailed observations of the engineering and public health challenges faced by American authorities.

The excerpts reveal a text that is as much about disease control as excavation. McKinlay devotes significant attention to the sanitation campaign led by Dr. W. C. Gorgas, describing the war on mosquitoes—the stegomyia and anopheles—that spread yellow fever and malaria. This focus on medical infrastructure, rather than just locks and cuts, distinguishes the narrative from purely technical reports.

A Congressional Perspective on the Canal's Significance

McKinlay opens by asserting the canal's supreme importance to California and the Pacific territories, arguing it will end centuries of isolation. He invokes Humboldt's prophecy that the United States would build the waterway, and credits Seward's Alaska purchase as foresight. The author's position as a congressman colors his rhetoric: the canal is presented as a national destiny fulfilled, with San Francisco's celebration already anticipated. This political framing, however, does not extend to detailed policy analysis; the excerpts focus on inspirational history rather than legislative debate.

Sanitation as the First Work of Importance

The most vivid passages detail the health crisis that preceded American control. McKinlay contrasts French mismanagement—where laborers slept on the ground and ate improperly—with the U.S. approach under Dr. Gorgas. He describes the systematic clearing of vegetation, draining of marshes, and use of petroleum to destroy mosquito breeding grounds. The text notes that the odor of petroleum could be detected a hundred miles at sea when approaching Colón. This sensory detail grounds the account in tangible experience, though McKinlay does not claim to have witnessed these conditions firsthand.

The Mosquito Theory and Its Human Cost

McKinlay recounts the scientific background of the mosquito-borne disease theory, crediting Dr. Reed's fatal self-experiment and Dr. Gorgas's subsequent work. He distinguishes between the stegomyia (yellow fever) and anopheles (malaria) mosquitoes, noting their limited flight range of under a quarter mile. The narrative treats the sanitation campaign as a heroic triumph of applied science, but the excerpts do not provide mortality statistics or compare outcomes with the French period. The account remains a layman's tribute rather than a clinical report.

McKinlay's book offers a snapshot of the canal's construction from a political and popular-science perspective, emphasizing the sanitation campaign as a prerequisite for progress. Readers interested in engineering details or post-1914 operations will need supplementary sources. The text's value lies in its contemporary voice—a congressman's view of a project he frames as the fulfillment of centuries-old dreams, with mosquitoes as the unlikely antagonists.