Wonderful ballon ascents : or, The conquest of the skies. A history of balloons and balloon voyages (1870)
Marion, Fulgence · New York : Cassell Petter & Galpin · leaf 148
t these sciences, which may bestudied in silent retreats, were more likely to yield fruit tothe discoverer than aerostatics, which demand courage andskill, and of which the experiments, which are always public,are attended with great cost. Robertsons proposed machine was to be 150 feet in… … The Minerva. to be chosen by the academies, who should stay in it forseveral months, should rise to all possible elevations, passthrough all climates in all seasons, make scientific observa-tions, &c. This balloon, penetrating deserts inaccessible Jj2 WONDERFUL BALLOON ASCENTS. by other means…
Balloons · Balloon ascensions
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Histoire de mes ascensions : récit de vingt-quatre voyages aériens [1868-1877] (1880)](https://img.insideoutlibrary.com/img/200/ia-39002011210615.med.yale.edu-179-11.webp)
