PREVENTION, SYMPTOMS AND TREATMENT jee 



anemia, with sometimes splenic tumor and sometimes glandular 

 enlargements, and bleeding from mucous membranes and diarrhea 

 are common. A diagnosis can only be made by microscopic exam- 

 ination of the fresh blood. The presence of large neutrophylic 

 myelocytes is characteristic of the spleno-medullary form, while the 

 polymorphonuclear and lymphocytes are absolutely increased but 

 relatively diminished. In the lymphatic form, the lymphocytes pre- 

 dominate and the leucocytosis is not so great. 



In pseudo-leukemia, lympho-sarcoma, or Hodgkin's disease, 

 there is general or local enlargement of the lymph nodes but no 

 leukocytosis. It has been seen in dogs and occasionally in horses. 



Treatment. — Since the etiology of both leukemia and pseudo- 

 leukemia is unknown and both diseases commonly are fatal, treat- 

 ment in animals should not be attempted unless experimentally. 

 The same treatment (arsenic) recommended for pernicious anemia 

 is applicable in either form of leukemia, and in human medicine 

 this use of arsenic has caused great prolongation of the patient's 

 life and even rarely appeared to cure leukemia. In dogs, the use 

 of Fowler's solution may be pushed up to y 2 dram thrice daily by 

 gradually increasing it from a dose of 5 minims. The treatment 

 otherwise as regards diet, general care, etc., is the same as for 

 anemia, although diarrhea and hemorrhages may demand especial 

 medication. In human practice the use of the X-ray has given the 

 best results in either form of leukemia. 



Lice — Pediculosis — Phtheiriasis. 



Lip-and-Leg Ulceration — Necrobacillosis. (See p. 291.) 



Liver Rot — Distomatosis — Liver Fluke Disease. 



The parasite or fluke worm is one of two species ; the Distoma 

 (or Fasciola) hepaticum and D. lanceolatum, of the Order Trem- 

 atodes (fluke worms). This order, with' that of the Cestoda (tape 

 worms) constitute the only two parasitic groups of the Plathel- 

 minthes (flat worms). 



The fluke worm attacks sheep, cattle, goats, other animals and 



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