360 ^- J- Anderson, Note on the Comparative thickness of the Skull etc. 



In future measurements that may be undertaken, besides indi- 

 vidual particulars, the skull districts should be accurately marked off, 

 so as to ascertain the corresponding locality in each skull. Further 

 a small trephine should be used to remove portions of the calvarium 

 which could them be marked off and measured and the brain under- 

 neath marked with paint, as in the method suggested by Professor 

 Sernoff^) for the intestine. In this way the exact locality of the 

 measurement can be noted for the brain. The trephined portions ot 

 the skull also can be marked and coloured differently and retained 

 for comparison. It is not suggested that the enquiry will be more 

 fruitful in leading to the discovery of remarkable cases of recession 

 of particular districts of the cerebrum than ordinary studies of varieties. 

 The Anatomical study if once complete might be safely allowed to 

 remain as a basis for the physiologist to work upon. The accumu- 

 lation of flbrous tissue or fluid invalidates the conclusions, and renders 

 any results of no value except in themselves. One skull owing to 

 atrophy of the bones was reduced to the thinness of paper. The 

 exact localities might at once be ascertained, if the trephined portions 

 were large enough, by the examination of the convolutions beneath, 

 which could then be drawn and compared after removal of the cal- 

 varium. For the approximations, where it is otherwise impossible to 

 make accurately located measurements, the position of the skull mea- 

 surement referred to the skull itself can easily be given. 



^) Internationale Monatsschrift für Anat. u. Phys. 1894. Bd, XL 



