The book of the fair : an historical and descriptive presentation of the world's science, art, and industry, as viewed through the Columbian exposition at Chicago in 1893 ... (1893)
It was shown that aerial navigation could now be classed among the sciences, and that such was the progress within recent years that most of the pioblems connected therewith would appear to be on the point of solution. Since the last international conference, held in Paris in 1889, a measurable… … item alone, and on the 800,000 GROUP FOR ADMINISTRATION BUILDING tons of anthracite coal used in this valley will at least be saved S2 per ton on the through route from B uft'a 1 o, which wou 1 d amount to si, 600,000 more.” At the closing session all the members of the various divisions met…
