340 



DR. C. F. SONNTAG ON THE ANATOMY, 



of the first seven dorsal vertebrte. All the origin is muscular 

 except that from the sixth and seventh cervical vertebrae. The 

 greater part becomes splenius capitis (Spl.Cap.) which is inserted 

 into the mastoid and outer part of the superior curved line of 

 the occipital bone, and a small slip runs into the first head of the 

 levator scapulae. The splenius cervicis (Sple. Oer.) consists of one 

 digitation which joins the third head of the levator scapulae. 



Text-figure 33. 



^-L.Cap. 



Muscles of the back. Comp : complexus ; R.M : rhomboideus. 

 Other letters in text. 



Other observers give the splenius cervicis insertions into the first 

 four cervical vertebrae. 



The sacro-spinalis (erector spinse) is divisible into three columns 

 — an outer ilio-eostalis, a middle longissimus, and an intei-nal 

 spinalis — but their characters difiier from those of the corre- 

 sponding muscles in Man. The outer and middle columns are 

 intimately fused at the origin of the muscle ; they separate in the 

 lumbar and greater part of the thoracic region; in the upper 



