aerostation

Understand the difference between aviation and aerostation, and know the types of apparatus which come under these two heads.

The young man had drawn from his great coat a voluminous portfolio; it was a work on aerostation.

Meusnier's balloon, of course, was never constructed, but his ideas have been of value to aerostation up to the present time.

A few words, in explanation, will here be necessary for such of our readers as are not conversant with the details of aerostation.

One voyage made with the latter he describes as leading to the most perilous descent in the annals of aerostation.