6 ([Return])
Ariadne Florentina, vi. 45.

7 ([Return])
Mr. Gould's, in his "Birds of Great Britain."

8 ([Return])
Delivered at Oxford, May 2d, 1873.

9 ([Return])
I call it so because the members and action of it cannot be seen with the unaided eye.

10 ([Return])
I wrote this some time ago, and the endeavors I have since made to verify statements on points of natural history which I had taken on trust have given me reason to doubt everybody's accuracy. The ordinary flight of the swallow does not, assuredly, even in the dashes, reach anything like this speed.