TOXICITY OF ANTIBIOTICS 299 



others, like actinomycin and clavacin, are highly toxic (796, 966). 

 Some, like tyrothricin, are hemolytic (396, 617)5 others, like penicil- 

 lin, streptomycin, and streptothricin, are not (Table 50). 



A great deal of additional information has recently accumulated on 

 the problem of toxicity and chemotherapy of antibiotic substances. Ref- 

 erence need only be made to the discussions of penicillin, streptomycin, 

 and some of the more recently isolated antibiotics, such as subtilin and 

 bacitracin. 



