APPENDIX. 



203 



Fig.il. 



Upper surface of Bight Wing of a Bird extended to show the relations between the 

 flight-feathers and coverts. 



1. Primaries I Remioes 6 - Minor coverts. 



2. Secondaries ( 7. Marginal coverts. 



3. Major coverts of primaries. 8. 'Kemiges of bastard wing. 



4. Major coverts of secondaries. 9. Scapulars. 



5. Median coverts. 



Fig. III. 



3. 



Under surface of Contour-feather showing after-shaft. 



1. Shaft (Rhachis). 



2. Vane. 



3. Quill (Calamus). 

 4 After-shaft (Hyporhachis). 

 p2 



