Remarks on A2rostation. 325 
Indispensable engagements have obliged Mr. Robertson to 
visit New-Orleans; but before his departure he formed a 
connexion with me, and has pledged himself, in several 
letters from New-Orleans, where he has made a most brill- 
iant ascension, to devote, at his return, in the course of 
the summer, or early in the fall, the practical experience 
which he has acquired in zrostation, to the execution and 
management of an zronaut, which he confidently believes 
will succeed, and which, spirited and patriotic subscriptions, 
will, I hope, enable us to construct, and to launch into free 
space, under the proud management of man. 
Respectfully, yours, kK. C. Gener... 
Art. XX.—Remarks on Afrostation; by the Eprror. 
Epmunp C. Genet, Esq. formerly minister from France. 
to the United States, and Mr. Eugene ROBERTSON, distin- 
guished by his adventurous and successful aerial voyages, 
ave issued proposals for raising funds by subscription, to. 
enable them to ascertain by actual experiment, the practica- 
bility of navigating the air. The principles of the plan and 
the outline of the machinery have been already published, in 
Mr. Genet’s Memorial on the upward forces of fluids, of 
which some account has been given in former numbers of this 
Journal. It is not to be doubted, that the experiments here- 
tofore made, for the purpose of directing balloons through 
the air, have f uilec an he princi- 
ples upon which a 
z © ee “ 
Ima 
nd in 
impelli ower 
i ts de ne I The case is considerably analagous (al- 
though not perfectly so) to that of a ship without sails float- 
ing in a current. But in this case there - an ee nee 
ing power that can be applied. _ It is found in oars and pa L 
ne Po 
dies, worked by muscular force or by steam. In principle 
