_Injection into the veins of Argentum Colloidale_, 1 per cent solution in doses of 1⅔ oz. (50 grammes) at intervals of 2 hours has been very strongly advocated by Dieckerhoff who in four successive 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 injection 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 possessing all the good qualities of the antistreptococcic serum. This is composed of sodium chloride 5 grammes, sodium phosphate 1 gramme, sodium sulphate 20 centigrammes, sodium carbonate 1 gramme, caffein chlorhydrate 10 grammes, boiled filtered 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 hæmorrhagic septicæmia. Lesions: petechiæ and hæmorrhages on mucosæ, serosæ and skin; gelatinoid exudates gravitating to the lowest parts of face, chest, belly and legs; chaps, oozing, sloughs, depilation, exudate in tongue, bloody diarrhœa, duration 14 to 40 days, mortality light; indurations. Diagnosis: from anthrax, black quarter, malignant œdema and acute hæmorrhagic septicæmia. Prevention: avoid infecting soils in summer and autumn; drainage, cultivation; chills. Treatment: venesection: laxatives, diuretics: intratracheal injections of iodine: colloidal silver. Locally: antiseptic astringents: remove eschars: facilitate breathing by surgical or mechanical means: good hygiene. _Synonyms._ Purpura Hæmorrhagica. Anasarca. Inflammatory Œdema. Yellow Water. Morbus Maculosus. This malady presents phenomena very similar to those found in the horse, and shows itself in mild and severe types. It has been noted by writers on diseases of cattle from Vegetius down, though under quite a variety of names.