INDEX OF SUBJECTS 



Heat sterilization, 68 

 dry, 68 



by burning, 68 

 by hot air, 68 

 moist, 69 



by boiling, 69 



by fractional sterilization, 70 

 by live steam, 60 

 by steam under pressure, 71 

 Hektoen and Ruediger on structure of 



opsonins, 283 

 Hemagglutinins, 235 

 Hematogen, 538 

 Hemolysin, immune, 226 

 Hemolysins of Staphylococcus pyogenes 



aureus, 329 



of Streptococcus pyogenes, 344 

 specificity of, 248 

 varieties of: 

 autolysins, 248 

 heterolysins, 248 

 isolysins, 248 

 Hemolysis, 201, 225 

 Hemolytic serum, 265 

 Hemolytic tests, 259 



obtaining blood for, 259 

 in large quantities, 260 

 in small quantities, 259 

 standard concentration of red blood 



cells for, 259 



Hemolytic unit, definition of, 265 

 Hemoproteus columbre, form and devel- 

 opment of, 761 

 invertebrate host of, 761 

 life history of, 763 

 occurrence of, 761 

 Hemoproteus noctua^, 750 

 Hemoproteus ziemani, 751 

 Hemorrhagic septicemia bacilli, 551 

 morphology of, 551 

 staining of, 551 

 varieties of: 



bacillus of chicken cholera, 552 

 Bacillus pestis, 554 

 bacillus of swine plague, 553 

 Hemosporidia, form and development 



of, 760 . 

 hemoproteus columbae, 761 



Hemosporidia, pinoplasmidae, 787 

 proteosoma (plasmodium) praecox, 

 763 



Hepatotoxin, 201 



Herpetomonada, 755 



Hesse's medium for colon-typhoid dif- 

 ferentiation, 133 



Heterolysins, 248 



Hides, tanning of, bacteria in, 720 



Hiss' agar-gelatin medium, isolation of 

 typhoid bacillus in stools by, 407 



Hiss' leucocyte extract theory and 

 therapy, 289 



Hiss' methods of staining capsules, 98 



Hiss' plating media for colon-typhoid 

 differentiation, 133 



Hiss' tube medium for colon-typhoid 

 differentiation, 133 



Hiss' serum water media for fermenta- 

 tion tests, 132 



"Hog-cholera" bacilli, 430 



differentiation of, from swine plague 

 bacillus, 554 



Hogyes, dilution method of, in treat- 

 ment of rabies, 656 



Horse meat, detection of, by precipitin 

 tests, 254 



Horses used in production of diph- 

 theria antitoxin, 216-217 

 of tetanus antitoxin, 221 



Howard and Perkins, discovery of 

 Streptococcus mucosus by, 350 



Huntson's method of staining capsules, 

 98 



Hydrocyanic gas, destruction of ro- 

 dents by fumigation with, 92 



Hydrogen, formation of, by bacteria, 



165 

 in nutrition of bacteria, 28 



Hydrogen peroxid as disinfectant, 76 



Hydrogen sulphid formed by bacteria, 

 165 



Hydrophobia. See 'Rabies 



Hypersusceptibility. See Anaphylaxis 



Hyphomycetes, 635 



conditions favorable to growth of, 

 ' 638 

 diseases caused by, 639 



