SMITHSONIAN REPORT, 1956— GAZ1N 



1. Pearce (left) has shown one of the natives, Marteo, the technique of coating all exposed 

 bone surface with tissue paper and an aqueous solution of gum acacia before the plaster 

 of paris jacket is applied. The gum acacia hardens the surface and the paper prevents 

 the plaster from adhering too securely to the bone so that it can later be removed. 



, Pearce here is demonstrating to two of our helpers the procedure involved in bandaging 

 a block of bone and matrix with burlap strips which have been dipped in plaster of paris. 

 After the top coat has set, the block is cut loose, turned over, trimmed down, and the 

 bottom surface plastered. 



