42 



Gregory Pincus and Anne P. Merrill 



SQ-IO 



:-0H 



SQ-2.0.4. 0.08 .0.016 

 0-10,2 



Fig. 7. Derivatives of 1 7-hydroxyprogesterone. (Dosage in milligrams. SQ = subcutaneous 



injection ; O = by gavage.) 



^-OAc 



SQ-IO ,04 ,008 ,0.016 SQ-2. 0.4.0.08 .0.016 



2 , 04 , 0.08 O-jO ,2 , 0.4 , 0016 



Fig. 8. Derivatives of 17-hydroxyprogesterone. (Dosage in milligrams. SQ = subcutaneous 



injection; O = by gavage.) 



