Introduction 



original state. In contour-feathers the barbules give 

 rise to " barbicels " which regularly end in little hooks 



crown (vertex) 



hind-head (occiput) 

 car coverts , auriculars. 



nape 



hind-neck (cervix)''' 

 back (dorsurn^ 

 scapulars-- ) 



rump (uropygium) 



upper-tail coverts^. 



lore 



Vorbit ! .forehead (frous) 

 \ A i /' .nostril 

 .cere 

 ,, ridge (culmen) 



, maxilla 



""/V. cutting edges (tomia) 



W 



, '-/'-mandible 

 Y'gonys- 



''throat (gula) 

 ."'"lesser coverts 

 ''fore-neck (jugulum) 

 .... median coverts 

 II " bastard wing (alula.) 



greater coverts 

 '-breast (fectus) 



"Jr" - secondaries (remiges secundarit) 



\ If 'under tail-coverts and 

 vent (crtssum) 



(reclrices) 



A Falcon 



To shew the nomenclature of the external parts 



that catch in the folded margins of the next row and 

 serve to produce a firm surface or " web " on each side 



