Summary 1.. Phenol and the three cresols have been condensed with chaulmoogric acid and the resulting products have been shown to be the hydroxyphenyl-and hydroxytolyl- dihydrochaulmoogric acids. 2. Studies of the physiological properties of these new phenolic dihydrochaulmoogric acids show that they have antiseptic activity against staphylococcus aureus. These studies are being extended to include bacillus tuberculosis and related ...