MATERIAL CONDITIONS 



49 



wider middle part bears on one surface a soft pad 

 for application to the infant's forehead. A ± strap 

 of soft cloth is attached by its upper extremity to 

 the middle of the upper edge of the wooden bar ; 

 and each end of its horizontal strip is continued by 

 a pair of strings which pass through holes in the 

 ends of the bar. The strings are brought together 

 on the front of the bar at its middle and passed 

 through the centre of a copper coin ^ or other hard 



disc. The bar is applied transversely to the fore- 

 head of the infant ; the vertical strap runs back 

 over the sagittal suture ; the transverse strap is 

 drawn tightly across the occiput, and the required 

 degree of pressure is gradually applied by twisting 

 the coin round and round on the front of the bar, 

 and so pulling upon the strings which connect the 

 ends of the bar on the forehead with the ends of 

 the strap across the occiput (PI. ^^). 



^ Some of the copper coins of Sarawak are perforated at the centre. 

 VOL. I E 



