Siw? , oe 
Fas als 5 aR RS ae Rat Mae eae a 
NEOUS COLLECTIONS mie VOL. 48 PL. I 
x, Three transverse sections of a secondary quill ot Columba livia. a at the base close to the 
primary quill; din the middle; c at the tip on the outer edge of the broad feather vane. Magnified 1:100 
2. Three transverse sections of a secondary quill of Caprimulgus ecuropeus. aat the base close 
to the primary quill; 4 in the middle; ¢ at the tip near the outer margin of the broad feather vane. 
Magnified 1:100 
