acknowledgments of a grateful and earnest man, who has himself devoted
to it the aspirations and efforts of a long life, and who is still
willing to take all the risks of failure upon himself.

The undersigned would be pleased to have friends interested in this
subject, call upon him, when the matter will be more fully described.

ROBERT HARDLEY,

17 PERRY STREET, or

114 Sixth Ave., cor. 9th St.


[Illustration: THE AERIAL MACHINE.]




REMARKS ON THE ELLIPSOIDAL BALLOON,

PROPELLED BY THE

_Archimedean Screw_,

DESCRIBED AS THE NEW AERIAL MACHINE,

NOW EXHIBITING AT THE ROYAL ADELAIDE GALLERY, LOWTHER ARCADE, STRAND.