FURTHER INSTANXES OF PARIETAL 

 DIVISION. 



ALES HRDLICKA. 



Since the publication of my monograph on " Division of the 

 Parietal Bone in Man and other Mammals," ' there appeared in 

 print three other direct or indirect communications on that same 

 subject by Frasetto,' Schwalbe,* and Le Double.* 



The new instances of the anomaly reported by these authors 

 are as follows : 



A . In human adults.— i . An antero-posterior complete divi- 

 sion of the left parietal in an "adult Savoyard " (Le Double) ; 



2. A complete vertical division, "originating from the sagit- 

 tal point " and "terminating in the inferior border" of the right 

 parietal, in the skull of an adult male (Le Double). The race 

 of the individual is not mentioned and the description leaves 

 much in doubt. 



3- A division in the right parietal of a "heavy, sclerotic," 

 skull of a male Egyptian. The division runs from the coronal 

 to the posterior third of the inferior border, and connects with a 

 trace of a vertical division (Frasetto). As the author states that 

 the usual sutures, even the parieto-temporal, are sinostosed, there 

 is great uncertainty as to the character of the division ; it sug- 

 gests a traumatism more than an anomalous suture. 



B. In human children and foetuses.— i . An antero-posterior 

 complete division in the right parietal of a seven year old child, 

 sex and race unknown. Skull hydrocephalic (Schwalbe). 



2. An antero-posterior complete division in the left parietal 



