. Journal of roentgenology . Old Water Tower (One of the Few Landmarks Remaining Unharmed After the Fire in 1871) business district. More than 2500 stores and factories wereconsumed and at least one-third of the entire populationleft homeless. The estimated loss was upwards of $200,-000, The worlds first structural iron and steel sky-scrapers were erected. The Worlds Fair occurred in Chi-cago in 1893. The wonders and beauty of this expositionsurpassed anything of its kind ever held in the world. Morethan 30,000,000 people visited the exposition. Jackson Parknow marks the site of the exp
. Journal of roentgenology . Old Water Tower (One of the Few Landmarks Remaining Unharmed After the Fire in 1871) business district. More than 2500 stores and factories wereconsumed and at least one-third of the entire populationleft homeless. The estimated loss was upwards of $200,-000, The worlds first structural iron and steel sky-scrapers were erected. The Worlds Fair occurred in Chi-cago in 1893. The wonders and beauty of this expositionsurpassed anything of its kind ever held in the world. Morethan 30,000,000 people visited the exposition. Jackson Parknow marks the site of the exposition and some of the oldbuildings are left standing. Chicago at the present time has an area of more than 200square miles. Western Avenue is a straight paved street THE JOlRNAL OF HOEXKiMXOLOfJY. 288 THE JOURNAL OF ROENTGENOLOGY for 231 2 miles. There are 4800 miles of streets and alleys,1350 miles of street railway tracks. The surface and ele-vated lines carry more than 3,000,000 passengers are at the present time 04 miles of subway, which isused entirely for commercial purposes. The total popula-tion at the present time is something over 2,700,000. Chicago may be said to be the convention city of theUnited States. 610 conventions with an attendance of520,000 delegates were held in 1917. From 1906 to 1917 in-clusive there were 4317 conventions with an attendance of3,994,000 delegates. The railroad facilities are one of theprincipal features contributing to Chicago as a conventioncity. There are at the present time 38 railroads terminatingin Chicago, representing over 100,000 miles of railway orforty per cent of the railway mileage of the United States. The boulevard and park systems are one of the mostbeautiful and extensive to be found in the world. This sys-tem
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Keywords: ., bookcentury1900, bookdecade1910, bookidjour, booksubjectradiology
