Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . 118 BO^ES OF THE Fig. 81 is the in-ternal surface of thesamebone, shewing thebroad and shallow de-pressions (17 and 18)produced by the con-volutions of the ante-rior lobes of the cere-brum and the internalcrest (19 and 20), whichgives attachment to thedura mater. Fig. 82 representsthe external surface ofthe parietals (ossa pa-rietalia) . At its upper(6), anterior (5), andposterior borders (7),are seen the serrated5 edges of the su
Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . 118 BO^ES OF THE Fig. 81 is the in-ternal surface of thesamebone, shewing thebroad and shallow de-pressions (17 and 18)produced by the con-volutions of the ante-rior lobes of the cere-brum and the internalcrest (19 and 20), whichgives attachment to thedura mater. Fig. 82 representsthe external surface ofthe parietals (ossa pa-rietalia) . At its upper(6), anterior (5), andposterior borders (7),are seen the serrated5 edges of the suture, andat its lower border (8),the bevelled edge,which is overlapped bythe temporal bone. Fig. 83 is the inter-nal surface of the samebone, and at the loweranterior angle is shewnthe canal (12) for lodg-ing the middle arteryof the dura mater,which is here seen togroove the bone withits numerous branches On the internal sur-face of the parietalbones (fig, 84) we ob-serve the longitudinalgroove, sulcus longi-tudinalis (1, 1, 1), .forthe longitudinal sinus BONES OF THE SKTTLL. 119 of the brain, and a number of little pits (2, 2, 2, 2), moreor less deep, in which the glandulse
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
