Petechial Fever in Cattle. 153 



bronchitis followed, and in others necrotic tracheitis and pulmo- 

 nary gangrene, so that the method has not been widely accepted. 

 If resorted to, the weaker solution is to be preferred, and may be 

 injected through a tracheal ring, or the membrane between two 

 rings twice a day in doses of 3 to 5 centigrammes (45 to 75 drops). 



Injection into the veins of Argentum Colloidale, 1 per cent solu- 

 tion in doses of \-/i oz. (50 grammes) at intervals of 2 hours has 

 been very strongly advocated by Dieckerhoff who in four suc- 

 cessive cases had complete recoveries in from three to six days. 

 After disinfection of the skin a small trochar and cannula, or a 

 hypodermic needle is introduced into the jugular and the injec- 

 tion made. Local treatment for the swellings was also applied. 



Injection subcutem of the antistreptococcic serum of Marmorec, 

 has been lauded as promptly overcoming the capillary dilatation, 

 and enabling the leucocytes to neutralize the toxins. 



Finally Menveux recommends an artificial compound as pos- 

 sessing all the good qualities of the antistreptococcic serum. 

 This is composed of sodium chloride 5 grammes, sodium phos- 

 phate 1 gramme, sodium sulphate 20 centigrammes, sodium car- 

 bonate 1 gramme, caffein chlorhydrate 10 grammes, boiled filter- 

 ed water 100 grammes. Inject daily in three doses 135 grammes. 



PETECHIAL FEVER IN CATTLE. 



Synonyms. Causes : microbes, maturity, hard work, chill, poor hygiene, 

 drying of damp lands in summer and autumn, impermeable soils, corrupt 

 water, bacillus, diplococcus ; resemblance to haemorrhagic septicaemia. 

 Lesions : petechias and haemorrhages on mucosae, serosae and skin ; gelati- 

 noid exudates gravitating to the lowest parts of face, chest, belly and legs ; 

 chaps, oozing, sloughs, depilation, exudate in tongue, bloody diarrhoea, du- 

 ration 14 to 40 days, mortality light ; indurations. Diagnosis : from an- 

 thrax, black quarter, malignant oedema and acute haemorrhagic septicaemia. 

 Prevention : avoid infecting soils in summer and autumn ; drainage, cultiva- 

 tion ; chills. Treatment : venesection : laxatives, diuretics : intratracheal 

 injections of iodine : colloidal silver. Locally : antiseptic astringents : re- 

 move eschars : facilitate breathing by surgical or mechanical means : good 

 hygiene. 



Synonyms. Purpura Hemorrhagica. Anasarca. Inflamma- 

 tory CEdema. Yellow Water. Morbus Maculosus. 



