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A. G. POHLMAN 







Figs. 5 to 10 CC, carotid canal; DTL, common drum-tubal ligament; IDTL, 

 inferior drmn-tubal ligament; 0, projecting lip of the occipitale; PM , pharyngeal 

 membrane; SDTL, fused superior and middle drum-tubal ligaments; SS, sphen- 

 oidal sinus; TD, common tubal duct; TA, tuba auditiva. 



