Abnormal Thichness of Skull. 4?1 



(2.) Idiocy. 



6. 537. Small Skull in an Idiot.— Skull of an idiot, Eobert 

 Auld — macerated . 



The skull is somewhat dolichocephalic, but is otherwise 

 well-shaped. It is 18| inches in circumference. 



G. C. 939. 



d. Changes due to conditions apparently constitutional, but more 

 or less obscure. 



For alterations in the skull of patients loho had suffered from rickets in youth, see 

 Nos. 25, 26, 27 and 28 of this Series. 



6. 538. Abnormal Thickness of the Skull-cap.— Skull-cap 



— macerated and trefined, to illustrate the above. 



The coronal and frontal sutures are nearly obliterated, and 

 the bone is elevated round the parietal eminences, so greatly as 

 to leave a groove in the position of the back of the sagittal 

 suture. The bone is also thickened at the frontal eminences, 

 but there the thickening seems to be as much internal as 

 external. The condition is said to have been due to rickets. 



B. C. I. 3. M. 38. 



6. 539. Abnormal Thickness of the Skull-cap.— Skull-cap 



— macerated and trefined, to illustrate the above. 



The coronal suture is obliterated at its lower end on either 

 side. The sutures are otherwise distinct. There is considerable 

 thickening near the parietal and frontal eminences. There 

 are irregular markings on the interior of the frontal bone, as if 

 the dura mater had been unusually adherent. The condition 

 is said to have been due to rickets. F. P. C. 593. 



6. 540. Abnormal Thickness of the Skull.— Anterior half of 



