600 INDEX 



Culture media, Extracts of pure dry yeast for 89 



Culture media, Preliminary note on the use of some mixed buffer materials for 

 regulating the hydrogen ion concentrations of, and of standard buffer 



solutions 491 



, The use of washed agar in 589 



Davis, Lewis. Bacteriologic peptone in relation to the production of diph- 

 theria toxin and antitoxin 477 



Dehydration. Some bacteriological aspects of 109 



Description of an apparatus for obtaining samples of water at different 



depths for bacteriological analysis 103 



Descriptive Chart for 1919, Report of the Committee on 127 



, Report of Committee on. Part II. Report of progress during 



1919 315 



t Report of Committee on. Part III. A modification of the Gram 



stain 321 



Diagnosis, The, of anthrax from putrefying animal tissues 343 



Diphtheria toxin and antitoxin, bacteriologic peptone in relation to the 



production of 477 



Donk, P. J. A highly resistant thermophilic organism 373 



Eberson, Frederick. A note on the viability of meningococci on yeast agar 

 medium 431 



Eide, Odd Kinck, and Thj0tta, Th. A mutating, mucoid paratyphoid- 

 bacillus isolated from the urine of a carrier 501 



Endothia parasitica, A method of determining the relative toxicity of so- 

 dium, potassium, lithium, and other ions toward: Data on sodium 

 chloride 309 



, The relative effect of phosphate-acetate and of phosphate- 



phthalate buffer mixtures upon the growth of, on malt extract and corn 

 meal media 305 



Esty, J. Russell. The biology of Clostridium Welchii 375 



Extracts of pure dry yeast for culture media 89 



Fairhall, Lawrence T., and Bates, Paul M. The sterilization of oils by 



means of ultraviolet rays 49 



Families, The, and genera of the bacteria. Final report of the Committee 

 of the Society of American Bacteriologists on Characterization and 



Classification of Bacterial Types 191 



Fate, The, of bacteria of the colon-typhoid group on carbohydmU media. . 437 



Fermentation, The use of agar slants in detecting 433 



Filtration, The, of colloidal substances through bacteria-retaining filters.. 363 

 Fitch, C. P., and Billings, W. A. A study of the action of eight strains of 



Bad. abortivo-equinus on certain of the carbohydrates 469 



Flagella stain, A modification of Loeffler's 181 



Flora, of the stomach, Note on 299 



