The skull and brain; their indications of character and anatomical relations

 
9781236681720: The skull and brain; their indications of character and anatomical relations

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1875 edition. Excerpt: ...of the frontal eminence. I sent home on two seperate occasions for a skull while preparing this section, but without any reference to the point in question, yet I find that the frontal eminence of the one is o-7 of an inch farther from the median line laterally than it is in the other; although the latter is by far the wider skull generally, and particularly it is 0.4 of an inch wider at the parietal eminence. Now, having marked off Professor Turner's divisions in accordance with his instructions on these skulls, I observe a great diversity in the relative size of the upper and middle frontal areas. In the narrower skull, the upper areas are nearly double the width of the middle areas, whereas the upper ones are the narrowest in the wider skull, in which the frontal eminence is closer to the median line. Professor Ecker says that the middle frontal convolution is generally the largest, but if the relation pointed out between the supero-frontal sulcus and the frontal eminence by Professor Turner is constant, I have seen hundreds of heads in which the superior convolution would be the largest as indicated by the space between the frontal eminence and the median line. Increase Of The Cranio-cerebral Divisions.--It occurred to me while studying Professor Turner's divisions of the cranium, that they might be advantageously increased to seventeen; and having had the privilege of examining a number of adult human brains and crania with this view, in the Museums of the Universities of Edinburgh and Glasgow, as well as of manipulating several heads during my travels and carefully measuring them, I humbly suggest the following supplementary method. It is impossible to lay down straight lines to more than approximately determine the tortuous windings of the...

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