Guerrero et al. : Treatment of Yaws.] 



[Phil. Journ. Sci., XIII, B, No. 4. 



Fig. 1. Case VIII, before treatment. 



Fig. 2. Case VIII, five days after treatment. 



Fig. 3. Case XIII, before treatment. 



Fig. 4. Case XIII, after 41 doses given in 

 sixteen days. 

 PLATE I. YAWS. 



