and colonization, and signals an added study of early California. The opening of the book recounts how the Paris Exposition leads the narrator to accept an invitation to visit Colorado’s mines with J.-P. Whitney and Colonel Heine, framing the chapters as letters written en route. He sails to New York, speeds by rail to Chicago, and sketches that city’s explosive growth, grain elevators, lake-water tunnel, and pork industry before pushing on to Omaha, the launch point of the Pacific railroad. Crossing Illinois and Iowa alongside emigrants, he contrasts “civilization” with the Far West, describes Omaha and nearby tribes, and notes recent attacks on railway workers. He then rides the Union Pacific across the Platte country to Julesburg, evokes prairie fires, French toponyms, and buffalo, visits Fort Sedgwick, and boards the overland stage with an armed escort. The stage journey to Denver brings fortified stations, accounts of frontier violence (including Sand Creek), harrowing captivity tales, and admiration for the grit of settlers—ending with a safe arrival. In Denver he depicts a young but bustling city born of 1859 gold finds, its institutions, markets, and outsized produce, then outlines the territory’s origins and social life before setting off into the Rockies; the section closes with horseback travels to Central City and Georgetown and vivid notes on dusty roads and communal washing stops. (This is an automatically generated summary.)