1 54 Mufrlcs of tie [Book IX 



and alfo into the lower edge of the. ten uppermoft 

 ribs, near their tubercles. This mulcle flrengthens 

 the fpmc, and keeps the body from bending for- 

 wards. 



The facro-lumbalis, which ariles in common with 

 the longiffimus dorfi, is inferted into all the P'JS near 

 their angle. It pulls down the ribs, and affifts in 

 creeling the trunk of the body. 



On the neck we find, the 



Complexus, which arifes from the tranfverfe pro- 

 eeffes of the feven fuperior vertebras of the back and 

 four inferior of the neck ; it is inferted, with the tra- 

 pezius, into the inferior edge of the protuberance in 

 the middle of the os occipitis, and into a part of the 

 curved line which runs towards the maftoid procefs. 

 When they both ad, they draw the head directly 

 backwards, or obliquely fo when only one is called, 

 into action. 



The trachelo-maftoideus, which arifes from the 

 tranfverfe proceffes of the three uppermoft vertebras 

 of the back, and from the five lowermoft of the neck, 

 where it is connected to the tranfverfus cervicis, is 

 inferted into the pofterior part of the maftoid procefs, 

 It affifts the complexus, but pulls the head more to 

 one fide. 



The levator fcapulse arifes from the tranfverfe 

 procefles of the five fuperior vertebras of the neck, 

 and is inferted into the fuperior angle of the fca^ 

 pula. It elevates the fcapula, and draws it a little 

 forwards. 



The fourth layer confifts of two pair on the back, 

 two on the pofterior part of the neck, four fmall pair* 

 fituated immediately below the pofterior part of the ; 

 occiput, and three on the fide of the neck, 



Qn the back are the 



