THE ASPERGILLUS CLAVATUS GROUP 99 



clavatin has since been applied. Additional studies by Waksman and his 

 co-workers have further defined its action and enlarged the list of bacterial 

 species inhibited (1942b and 1943). Hooper et al (1944) have demon- 

 strated the identity of clavacin and patulin, a bactericidal substance ob- 

 tained from Penicillium palulum by Raistrick and associates (1943) and 

 reported to be of value in the treatment of the common cold. 



Philpot (1943) reported the production of a penicillin -like substance by 

 a strain of Aspergillus giganteus. In earlier tests by Wilkins and Harris 

 (1942) this strain had been found to produce a substance active against 

 Staphylococci. 



