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region) with, the multifidus spinse, transverse processes of the lumbar 

 vertebrae, and with the middle layer of the aponeurosis of the trans- 



* The fourth and fifth, and part of the sixth layer of the muscles of the back. 

 1. The common origin of the erector spinse muscle. 2. The sacro-lumbalis. 

 3. The longissimus dorsi. 4. The spinalis dorsi. 5. The cervicalis ascendens. 

 6. The transversalis colli. 7- The trachelo-mastoideus. 8. The complexus. 

 9. The transversalis colli, shewing its origin. 10. The semispinalis dorsi. 11. 

 The semispinalis colli. 12. The rectus posticus minor. 13. The rectus posti- 

 cus major. 14. The obliquus superior. 15. The obliquus inferior. 16. The 

 multifidus spinse. 17. The levatores costarum. 18. Intertransversales. 19- 

 The quadratus lumborum. 



