66 



THE CAT. 



[chap. III. 



together both in front and behind by ligamentous fibres, and such 

 fibres surround the articulations of the costal cartilages with the 

 sternum, and thence radiate over the latter both dorsally and 

 ventrally. The various articulations of the ribs with the vertebrae 

 and of the costal cartilages with the sternum, are furnished with 

 synovial membranes. Thus a movement of the ribs backwards and 

 forwards alternately is facilitated, and such movements, we shall 

 hereafter see, are continually repeated in the process of breathing 



^S- 



THE SKELETON OF THE HEAD. 



§ 22, The remaining part of the axial skeleton is that familiarly 



Fig. 2S.— The Skuij-, viewed Dorsally. 



/. Frontal. 



J. JIalar. 



I. Lnclirj-nial 



I*. Ijai'liryiiuil foramen. 



la. L.'inilKlnidul riil|.;e. 



m. Maxillary. 



71. Nasal. 



p. I'alatinp. 



pf. Post-orbital process of frontal. 



J)/. P()st-nrl)ital jirocess of malar. 



pm. Premaxilla. 



*. Sajiittal suture. 



X. Posterior \<wr of zyt'omatic arcli. 



1. Incisive foramen. 



2. Infra-orbital fmamen. 



4. Posterior jialatine foramen. 

 [>, bplicno-iialatinc foramen. 



known as the skull. This bony structure affords shelter to the 

 brain, and is also the seat of certain organs of special sensation — 



