394 Veterinary Medicine. 



number of infectious maladies are primarily- and pre-eminently 

 diseases of the lymphatics, as glanders, strangles, tuberculosis, 

 cancer, anthrax, swineplague, etc. 



Symptoms. The most common form is where lymphangitis ex- 

 tends from some pre-existing wound — as pricked or suppurating 

 foot, fistula of foot, withers or poll, chafing of shoulder or back, 

 cracked heels, boil, sloughing bruise, etc. The swelling around 

 the sore or injury involves in fact the radical lymphatic plexus in 

 the connective tissue (reticular lymphangitis). When the swell- 

 ing extends and becomes more tense, with firm, painful sinuous 

 cords running out of it in different directions, and especially to- 

 ward the nearest lymphatic glands, and when these glands are 

 slightly swollen and tender, tubular lymphangitis is diagnosed. 

 No more striking example can be found than in skin glanders 

 (farcy). The rigid cords extend from the side of the face, from 

 the eye, and nose down toward the submaxillary glands and with 

 more or less adjacent engorgement. Or on a hind limb, or some 

 portion of the trunk, a more or less turgid swelling with one or 

 more firm nodes (farcy buds) and painful, tortuous cords running 

 towards the lymph glands is very characteristic. 



A tuberculous case may show an indolent, hard, comparatively 

 insensible cutaneous cord leading toward the jugular furrow, the 

 prescapular, precrural or inguinal glands, and at long intervals 

 softening, fluctuating, bursting and discharging a thick pus. In 

 a carcinoma there is the old, hard, nodular, and finally ulcerating 

 swelling from which the firm cords extend to the mass of steadily 

 enlarging lymphatic glands. 



A simpler form is where a bruise by the harness causes a hard, 

 thick, slough, embracing the entire thickness of the skin, from 

 which the firm corded lymphatics extend in different directions. 

 After the slow process of detachment, the local lymphangitis 

 usually subsides under simple cooling or antiseptic treatment. 



But the grade of such lymphangitis is as varied as the particu- 

 lar germ or combination of germs present in the wound, and the 

 susceptibility of the animal attacked, and there will be high, 

 moderate or no fever, according to the severitj^ of the case, and 

 in some cases purely local trouble and in others general infection 

 with purulent or septic localization in distant parts. There is al- 

 ways danger of extension to a neighboring joint with destructive 

 results. 



