SMITHSONIAN MISOEl-LANEOUS COLLECTIONS 



VOL. 72, NO. 10. PL. B 





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44 



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47 



Fig. 39. Entering vascular canals of outer table of a human frontal bone. 



40. Tangential section of the inner table of the same bone, showing the 



circulation. 



41. Tangential section of the outer table of a human parietal bone, show- 



ing the circulation. 



42. Tangential section of the inner table of the same bone, showing the 



circulation. 



43. Tangential section of the squamous portion of a human temporal 



bone, showing the circulation. 



44. Tangential section of the outer table of a human occipital bone, show- 



ing the circulation. 



45. Tangential section of the inner table of the same bone, showing the 



circulation. 



46. Vascular expansions filled with fat globules as seen in outer table of 



occipital bones. 



47. Tangential section of human inferior maxilla in front of and just 



below left central incisor tooth, showing the circulation. 



