The Filtrable Microorganisms of the Pleuropneumonia Group.

General characteristics of the group; methods of study..................... 4 Bovine pleuropneumonia, and the etiological agent........................ 13 Agalactia of sheep and goats, and the etiological agent................... 16 Pleuropneumonia-like microorganisms of dogs; their relation to canine distemper........................................................... 18 Pleuropneumonia-like microorganisms of rats........................... 20 Pleuropneumonia-like micro6rganisms of mice............................ 23 Pleuropneumonia-like micro6rganisms of guinea-pigs..................... 31 Pleuropneumonia like micro6rganisms of man............................ 32 Pleuropneumonia-like microorganisms of sewage and decomposing matter.. 34 L1 and Streptobacillus moniliformis. Symbosis or variation?.......... 35 Filtrability and size of minimal reproductive units......................... 39 Toxigenicity and immunological reactions.................................. 41 Pathology.......................................................... 45 Effects of immune serums, vaccines, and chemotherapeutic agents. ..................48 Relation to viruses, and other ifitrable and nonifitrable microbes........... 52 Classification and nomenclature.......................6 . . . . . . ... 5