Bio:. 



LABORATORY 



LIBRARY 



WOODS HGLE, MASS. ! 

 W. H. 0. !. 



CONTENTS 



CHAPTER 1 



Lactobacillic Acid, a Novel Microbial 

 Metabolite 



7. Discovery of Lactobacillic Acid, 1 



2. Structure of Lactobacillic Acid, 7 



3. Laboratory Synthesis of Long-Chain 

 Fatty Acids Containing the Cyclopro- 

 pane Ring, 8 



4. X-ray Studies of Cyclopropane Fatty 

 Acids, 22 



3. Occurrence of Lactobacillic Acid and 

 Its Homologs in Bacteria, 27 



6. Microbiological Activity of Cyclopro- 

 pane Fatty Acids, 28 



