268 



ADOLF H SCHULTZ 



This distinction of Schwalbe seems somewhat arbitrary, in- 

 asmuch as all transitions can be observed in juvenile skulls. On 

 the basis of original observations the author is convinced that 

 the metopic fontanelle is derived from the bregmatic fontanelle, 

 and at some time has become separated from it. Figure 4 gives 

 the best proof. An interfrontal suture wide at its upper part, 

 that is, a very long arm of the great fontanelle, as shown in num- 

 bers 1, 2, 3 and 4 in figure 4 is not of rare occurrence. Among 35 

 skulls of infants up to a few months' old the frontal arm of the 

 great fontanelle was found to extend six times to within 10 to 17 



5. Nejgro 2m. 



6. Megro 5m. 



8. V/hit'e i m. 



A, 



Fig. 4 Normae frontales of frontal bones of juvenile skulls with a long arm 

 of the bregmatic fontanelle, which has been constricted in the lower cases to form 

 a metopic fontanelle. 



