190 ZAE NORTHRUP WYANT 



factory if not more so, than the ordinary meat extracts. Our 

 laboratory stock cultures, pathogens and all, with but few excep- 

 tions, are at present growing very well indeed on this bouillon 

 cube medium. One or one and a half cubes (about 3 or 5 grams) 

 are used per liter at a much decreased cost, with an increased 

 ease in preparation, and the titer of the medium does not have 

 to be changed unless so desired. 



From our experiments and practical experience, it is quite 

 evident that the use of ordinary bouillon cubes can be recom- 

 mended in general laboratory work where ordinary beef extract 

 or meat media has been formerly used. Their use is also sug- 

 gested in the preparation of various special media. 



