Fig. 3 



Fig. 



Fig. 4 

 From O. F. Cook, Department of Agriculture 



Picture No. 3. 



-Native Method of Coagulating the Latex or Milk of 

 the Rubber Tree 



Fig. 1. — Spreading latex on Calatlnea leaf ; a leaf already coated shown at the right, lying in 

 the sun to coagulate the rubber. Fig. 2. — Pressing the two coated leaves together to unite the 

 two sheets of rubber. Fig. 3. — Pulling the leaf away from the rubber. Fig. 4. — The finished 

 sample of rubber, marked by the veins of the leaf. 



