CONTENTS 



Chapter I. : 



PAGE 



NOMENCLATURE ...... i 



DEFINITION ... - . - - 3 



HISTORY AND DISTRIBUTION ----- 3 



Chapter II.: 



ECONOMIC IMPORTANCE - - - - "14 



ETIOLOGY ....--. i6 



Chapter III. : 



CLINICAL symptoms - ----- 21 



DIFFERENTIAL DIAGNOSIS - - - - '30 



Chapter IV. : 



PROGNOSIS - - - - - - - 41 



TREATMENT .------ 42 



PROPHYLAXIS .-.-..- 44 



Chapter V. : 



POST-MORTEM EXAMINATION AND PATHOLOGICAL ANATOMY 46 

 PATHOLOGICAL HISTOLOGY - - - - "55 



Chapter VI. ; 



DESCRIPTION OF JOHNE'S BACILLUS - - - - 62 



CULTIVATION OF THE BACILLUS - - - - 65 



NATURE OF THE " ESSENTIAL SUBSTANCE" - - - 92 



DESCRIPTION OF CULTURES - - - - - IO3 



Chapter VII. : 



DIAGNOSTIC AND OTHER VACCINES - - - - 106 



ix 



