H. Wing preserved in formalin, on which the center of gravity is recorded.
I. Tracing of wing H when frozen in soaring position, on which the center of gravity is marked.
J. Wing with muscle removed, on which the center of gravity is shown.
Several persons connected with the Smithsonian Institution and U. S. National Museum have contributed towards securing the results herewith submitted. Among them, I desire especially to mention Mr. W. H. Holmes, Mr. [p293] F. A. Lucas, Mr. N. R. Wood, and Mr. R. L. Reed. Mr. Holmes superintended the experiments in connection with No. 6 (finding the bird’s center of gravity), and by his suggestions and criticisms helped me in many other particulars. The photographs and enlargements were made by Mr. T. W. Smillie.
Respectfully submitted,
ROLLA P. CURRIE,
Aid, Division of Insects, acting in the Division of Birds.
OCTOBER 16, 1900.
The feats of airmanship performed by the “John Crow” seemed to greatly impress Mr. Langley and shortly after this trip he wrote the following letter to the writer:
SMITHSONIAN INSTITUTION