TUBERCUI.OSIS CONTINUED. 



SYMPTOMS OF TUBERCULOSIS IN CATTLE. 



Microscope and staining ; by centrifuge ; by agglutination test ; by inocu- 

 lation ; by tuberculin test ; tuberculin ; reaction ; precautions, temperature 

 before injection, exclusive of other illness, of parturition, abortion, heat, 

 isolation, of hot building, of cold draughts, of hard floor, of faulty milk- 

 ing, privation of water, of change of food, of journey, of rude handling, 

 of previous recent tests, of anti-pyretics, make special examination in un- 

 thrifty, test excluded animals later, danger of infecting through thermome- 

 ter ; technique ; dose ; time of injecting ; identification and record of sub- 

 jects ; seat of injection ; sterilization of syringe and skin ; temperatures 

 hourly or every second hour from 8th to i6th or later ; typical reaction ; 

 accurate record of feeding, watering, milking or other occasion of hyper- 

 thermia or hypothermia ; passing on the value of a rise ; local swellings ; 

 chills ; tremors ; effect of test on general health of reacting and non-react- 

 ing animal ; action on parturient cows ; reliability of test. Relation of 

 human to bovine bacillus ; varying character of microbes generally, of 

 tubercle bacillus in man ; bacillus of man and bird interchangeable ; tuber- 

 culosis in man and ox, similarity, coextensive, apparent exceptions, direct 

 infection — man to cattle — cattle to man ; encrease of tabes ; experiments of 

 Adami, Ravenel and Garnault ; experiments on cold blooded animals ; 

 bearing of variations of susceptibility on sanitary work. Treatment : 

 When admissible ; hygiene ; rich feeding ; oleaginous seeds : cod liver oil ; 

 pneumatic cabinet ; grooming ; warm bath ; medicated inhalations ; sul- 

 phurous acid ; chlorine ; formaline ; calmatives ; carbonate of creosote ; 

 derivatives ; streptococcic serum ; air or oxygen in peritoneum ; excision 

 of tubercle ; Prevention ; Extinction in cattle ; expense , supply of tuber- 

 culin and efficient veterinarians ; appraisment ; indemnities ; vermin ; dis- 

 infection ; scheduling ; control of purchases. Breeding healthy stock from 

 infected ; raising healthy offspring without sterilizing the milk. Removal 

 of unthrifty and suspicious animals. Removal of animals showing objective 

 symptoms, or, tuberculin reaction. Generally applicable measures. Hy- 

 giene of milk, butter, cheese, whey, oleomargarine. Hygiene of meat. 



Tuberculosis may be acute or chronic, yet as seen in cattle, 

 from casual infection, it usually comes on very slowly and in.sidi- 

 ously and follows a chronic course. As the symptoms vary 

 according to the organs involved it will be convenient to consider 

 these in turn beginning with such as show the most diagnostic 

 phenomena. 



Pulmonary Tuberculosis. Though one of the most common 

 and dangerous forms of the disea,se this may last for months or 



445 



