ZOOLOGY 



stroke of the wing is performed. The skeleton of the wing is 

 connected with that of the trunk l.iy two bones, one of which 



Fig. 353. — Skull of a young pigeon in three views : .4. dorsal ; B, ventral ; 

 and C, lateral. With the aid of the skull of a young pigeon nr ohirken 

 one can find the bones which bear the nanirs indiraterl : nl.s. :ilisphenoi<l ; 

 an, angular, and ar, articular of the l()Wi.-r .iaw ; hn. hasioecipital ; d, 

 dontar\" (l.ntt bearing no teeth in modern liirds) ; en, {•xorcipitixl ; vi . 

 opening of Eustachian tubi' ; f.ui, great foramen of skull ; fr. frontal ; 

 (.o.s. interorbital septum; jii, jugal ; Ic. lachrymal; Ib.s, lamboidal 

 suture; m.eih, mescthmoifl ; iiix, nuixiUa ; rex.p, maxillopalatine 

 process; na, na' , nn" , nasal; o.c, occipital condyle; or.fr. orbital plate 

 of frontal; pa, parietal; pti.s, parasphenoid ; pi, palatine; p.mx, pre- 

 maxilla ; pt, pterygoid; qu, quadrate; s.iin, supraangular ; s.o, supra- 

 occipital; sq, squamosat ; tij, tympanic cavity; II-XII, opening for 

 cerebral nerves. From Parker's "Zootomy." 



