318 ARTS AND CRAFTS OF GUIANA INDIANS [ETH, ANN. 38 
having a diameter somewhat less than the width of the mat, which, 
after being placed between the two and carefully “dumped” in the 
center to give the necessary concavity, is then tied onto both of them 
in eight places at equal intervals. This tying, which serves but a 
temporary purpose, is done with a piece of itiriti strand, for which 
a passage is made where required with a deerhorn piercer. Each of 
Fic, 109.—Manutfacture of circular tray by Warrau. 
the four corners of the square projecting beyond the hoops is now 
thinned (B) just around the circle by cutting away all the hori- 
zontal strands in one half of each quadrant and all the vertical 
strands in the other half. The next thing is to take an extra long 
piece of mamuri (/) and overcast the whole edge (both of the hoops 
and intervening mat included) at intervals of about five or six 
strands at a time (C), the mamuri being inserted fairly loosely at 
