PREVENTION, SYMPTOMS AND TREATMENT I2g 



wound of the canal in layers, and to overlap the aponeurotic struc- 

 ture to secure firmer union. The skin is closed with silkworm gut 

 sutures. Drainage may be left in the lower angle of the wound. 

 In some cases of strangulated inguinal hernia, after the sac 

 has been opened, the ring incised, and the hernia reduced, nothing 

 further has been done and a good recovery has ensued. While 

 such treatment may be life-saving at the time, there is apt to be a 

 recurrence of the hernia and it is not to recommended unless the 

 condition of the patient is so poor as to contraindicate a proper 

 ligation of the sac and repair of the ring. 



Hog Cholera — Swine Fever. 



There are three, distinct, infectious diseases of swine which are 

 often confounded and we will therefore include them under this 

 one head. 



Hog Cholera or Swine Fever is much the most important and 

 is the cause of the chief mortality in swine in the United States and 

 is the only disease of the three common in Great Britain. 



It is caused by an invisible microorganism, not yet isolated, 

 which is found in the blood and escapes in the urine and feces of 

 the sick. 



Hog cholera is communicated to healthy swine by the urine 

 and feces of infected animals in various ways : while swine are being 

 transported in cars, stock-yards and roads; by infected manure 

 brought to the habitations of healthy swine in running streams or on 

 the feet of animals and men ; by contact of normal swine with those 

 recovering from hog cholera; by contact with animals recently ex- 

 posed to hog cholera, and by exposure to animals having the vague 

 chronic form of hog cholera. 



Two forms of hog cholera are seen : The acute — in which the 

 animal has fever and displays dulness, tendency to lie and disin- 

 clination to rise, conjunctivitis with gluing of the eyelids together 

 by discharge, and watery diarrhea. Death may ensue in a few days. 



Digitized by Microsoft® 



