Vie CONG. INTERN. REPROD. ANIM. INSEM. ARTIF., PARIS, 1968, VOL. Ii Progesterone /‘“‘ Chlormadinone R 90 90 20 80 8C 30 70 70 70 60 60 60 50 50 50 40 40 40 ; 30 30 30 { 2 0 2 ‘ 10 o = 15 1215 9 mg mg Days Days after End after End of Treatment ST Treatment mg 1 12,5 mg 1 1 ng Figure I. Height of vaginal epithelium. Progesterone Chlormadinone Subjective Score 4 ~4 4 3 3 5 2 & 2 1 1 1 15 1124554 9 mg Days after End ° of Treatment Days 1 after End of Treatment 8 152 3255, g 1 1 mg Figure II. Carmin reaction of vaginal epithelium. Beiobolaidsongirial plihvy: HAFEZ, E.S.E. (1965), Personal communication. HARPER, M.J.K. (1962), J. Endocrinol. 24, XX. These investigations were supported by the Deutsche Forschungsgemeinschaft. 1529