MASCHA] STRUCTURE OF WING—FEATHERS 29 
24. Section parallel to the curved fibers. 
25. Section parallel to the hook-fibers. 
26. Section of a hand-remex of Columba livia, parallel to the curved fibers. 
Magnified 1: 225. 
27. Section of a hand-remex of Columba livia, parallel to the hook-fibers. 
Magnified 1: 450. 
28. Curved fibers of Columba livia. Magnified 1: 270. 
29. Transverse section of a secondary quill near the primary quill of Bubo 
maximus. Magnified 1: 100. 
30. Outer vane of the ninth hand-remex of Podargus humeralis, showing 
the dentate margin. Magnified 1:2. 
31. Outer vane of the ninth hand-remex of Bubo maximus, showing the 
dentate margin. Magnified 1:2. 
32. Section through the outer portion of the broad feather vane in a hand- 
remex parallel to the curved fibers of Bubo maximus, showing the down on 
the upper side. Magnified 1:12. 
33. Section through the middle of a hand-remex of Bubo maximus, perpen- 
dicular to the secondary quills. Magnified 1:7. 
34. The teeth of the margin of the outer feather vane of the tenth hand- 
remex of Bubo magellanicus. Magnified 1:70. 
