present structures have been made and insisted
upon blindly, because of this wrong insistence on
forms.

STUDY OF BIRD FLIGHT USELESS.--The study of
the flight of birds has never been of any special
value to the art. Volumes have been written on
the subject. The Seventh Duke of Argyle, and
later, Pettigrew, an Englishman, contributed a
vast amount of written matter on the subject of
bird flight, in which it was sought to show that
soaring birds did not exert any power in flying.

Writers and experimenters do not agree on the
question of the propulsive power, or on the form
or shape of the wing which is most effective, or
in the matter of the relation of surface to weight,
nor do they agree in any particular as to the effect
and action of matter in the soaring principle.

Only a small percentage of flying creatures use
motionless wings as in soaring. By far, the
greater majority use beating wings, a method of
translation in air which has not met with success
in any attempts on the part of the inventor.

Nevertheless, experimenting has proceeded on
lines which seek to recognize nature's form only,
while avoiding the best known and most persistent
type.