248 BUREAU OF ANIMAL INDUSTEY. 



the nostrils and month show more or less dark-red or purple spots. 

 There ma}' be a discharge of blood-colored serum from the nostrils; 

 the tongue ma}'' be swollen so as to prevent eating or closing of the 

 jaws. In the most intense cases, within from twenty-four to forty- 

 eight hours bloody serum may exude through the skin over the swollen 

 parts, and finall}' large gangrenous sloughs may form. The tempera- 

 ture is never very high, the pulse is frequent and compressible, and 

 becomes feebler as the animal loses strength. A cough is usually 

 present. The urine is scanty and high colored, and Avhen the intestines 

 are much affected a bloody diarrhea may set in, with colicky pains. 

 Some of the internal organs become implicated in the disease, the 

 lungs may beconie edematous, extravasation may occur in the intesti- 

 nal canal, or effusion of serum into the cavity of the chest or abdomen; 

 occasionally the brain becomes affected. A few cases run a mild 

 course and recovery may commence in three or four days; generally, 

 however, the outlook is unfavorable. In severe cases septic poisoning- 

 is liable to occur, which soon brings the case to a fatal issue. 



Pathology. — On section we find the capillaries dilated, the connective 

 tissue filled with a coagulable or coagulated lymph, and frequently we 

 may discover gangrenous spots beneath the skin or involving the skin. 

 The lymphatic glands are swollen and inflamed. Extensive extravasa- 

 tions of blood may be found embedded between the coats of the intes- 

 tines, or excessive effusion into the substance of the lungs. 



Treatment. — Diffusible stimulants and tonics should be given from 

 the start. Carbonate of ammonia, 1 dram, fluid extract of red cin- 

 chona bark, 2 drams, and tincture of ginger half an ounce, with half 

 a pint of water; thin gruel or milk should be given every four or six 

 hours. But especial care should be exercised to avoid injury by 

 drenching. If the horse has difiiculty in getting the head up and 

 swallowing, smaller doses must be given with a small hard-rubber 

 syringe. Sulphate of iron in 1-dram doses may be dissolved in water 

 and given every six hours. Chlorate of potassa, in 2-ounce doses, 

 may be given every eight or twelve hours. Colloidal silver may l)c 

 administered intravenously in doses of from 5 to 12 grains. Washings 

 with lead and alum water are useful and may be repeated several 

 times each day. If the swellings are very great, they may be incised 

 freely and the resulting wounds should be washed at least twice daily 

 with a warm 3 per cent solution of creolin or other good antiseptic. 

 Tracheotomy may be necessary. Complications, when they arise, 

 must be treated with proper circumspection. 



DISEASES OF THE LYMPHATIC SYSTEM. 



The lymphatic, or absorbent, system is connected with the blood- 

 vascular system, and consists of a series of tubes which absorb and 

 convey to the blood certain fluids. These tubes lead to lymphatic 



