PARASITIC DISEASES. 



811 



Fig. 1067.— Bumps Produced by the Larva of the Gad-fly 



Symptoms- — The most prominent symptom is the circular patch 

 of scaly crusts, which at first adhere clpsely, but in time become 

 detached from the central point by a purulent fluid! The period of 

 incubation is from eight to fourteen days. 



Treatment.— Separate all affected animals. The crusts must be 

 removed and destroyed. First clean the parts with soap and water; 

 and then apply a mild murcurial or iodine ointment. The following 

 may be used every day: — 



Iodine J dr. 



Iodide of potash 1 " 



Cosmoline . . 1 oz. 



Mix for an ointment. 



Or the part may be painted with the 

 following mixture : — 



Carbolic acid , , 1 part. PlG- i 68.— Gad-fly ( Tabanus 



Aceticacid 20 " ' Bovinus). 



