xviii CONTENTS 



XXV. The paratyphoid bacilli. 



The origin of the terms "paratyphoid" and "paracolon." The 

 relation of the "paratyphoid" bacilli to the " haemorrhagic septic- 

 aemia" group and to the " enteritidis " group. The classification 

 adopted. The origin and definition of the "Salmonella group." 

 Other names suggested for the "paratyphoid " group, - 420 



XXVI. Bacillus paratyphosus A. 



Introduction, - - 423 



Section I. Experimental inoculation., - - 424 



Section II. Morphology, 424 



Section III. Biological properties, - 424 



(1) Biochemical reactions, p. 424. (2) Vitality and virulence, p. 425. 

 (3) Toxin, p. 425. (4) Vaccination, p. 425. (5) Agglutination, 

 p. 426. (6) Absorption tests, p. 427. (7) Complement fixation, 

 p. 428. 



Section IV. The diagnosis of paratyphoid A infections. The 



isolation and identification of the bacillus, 428 



XXVII. The Salmonella group. 



1. Bacillus paratyphosus B. 



Introduction, - 431 



Section I. Experimental inoculation, - 433 



Section II. Morphology, 433 



Section III. Biological properties, - - 434 



(1) Biochemical reactions, p. 434. (2) Toxins, p. 434. (3) Vaccina- 

 tion and the properties of immune serums, p. 435. (4) Agglutination, 

 p. 435. (5) Absorption tests, p. 436. (6) Complement fixation, 

 p. 437. 



Section IV. The isolation and identification of the bacillus, - 437 



2. Bacillus enteritidis Aertrycke. 



Introduction, - - 438 



Section I. Experimental infection, - 439 



Section II. Morphology, - 440 



Section III. Biological properties, 440 



Section IV. Isolation and identification of the bacillus, - 441 



3. Bacillus enteritidis Gaertner. 



Introduction, - - 442 



Section I. Experimental inoculation, - 442 



Section II. Morphology, 443 



Section III. Biological properties, 443 



Section IV. Isolation and identification of the bacillus, - 444 



4. Pseudo-Gaertner bacilli, - .... . 444 



