conditions large surfaces may be controlled with
not much greater difficulty than small ones, if the control is effected
by manipulation of the surfaces themselves, rather than by a movement of
the body of the operator.

5. That the head resistances of the framing can be brought to a point
much below that usually estimated as necessary.

6. That tails, both vertical and horizontal, may with safety be
eliminated in gliding and other flying experiments.

7. That a horizontal position of the operator's body may be assumed
without excessive danger, and thus the head resistance reduced to about
one-fifth that of the upright position.

8. That a pair of superposed, or tandem, surfaces has less lift in
proportion to drift than either surface separately, even after making
allowance for weight and head resistance of the connections.

[Illustration]

+------------------------------------------------------------------+
|Transcriber's Note: |
| |
| |
|On page 15: |
| |
|Wilbur, who was at one end, seized it in front, Mr. Daniels and I,|
|who were behind, tried to stop it behind, tried to stop it by |
|holding to the rear uprights. |
| |
|has been changed to |
| |
|Wilbur, who was at one end, seized it in front, Mr. Daniels and I,|
|who were behind, tried to stop it by holding to the rear uprights.|
| |
| |
|On page 21: |
| |
|Lilienthal was the first to discover this exceedingly though our |
|measurements differ considerably from those of Lilienthal. While |
|important fact, which is fully set forth in his book, "Bird |
|Flight the Basis of the Flying Art," but owing to some errors in |
|the methods he used in making measur