606 INDEX 



Wyant, Zae Northrup. Bouillon cubes as a substitute for beef extract or 

 meat in nutrient media 189 



Wyant, Zae Northrup, and Normington, Ruth. The influence of various 

 chemical and physical agencies upon Bacillus botulinus and its spores. 

 I . Resistance to salt 553 



Yeast agar medium, A note on the viability of meningococci on 431 



Yeast, Extracts of pure dry, for culture media 89 



