. Diseases of the dog and their treatment. flammatory efflorescences which look very much like squamouseczema, with partial loss of hair and formation of scabs. The diagnosisis usually easy, as we can see the parasites and their eggs by separatingthe hair. Therapeutic Treatment.—This consists of destroying the parasitesand their eggs. For that purpose it is often requisite to clip the safest and least harmful agents are decoctions of tobacco (5 to 10per cent.), solutions of creolin (3 to 6 per cent.), petroleum (crude, ormixed with benzine, lysol or sapo-cresol), and in small dogs
. Diseases of the dog and their treatment. flammatory efflorescences which look very much like squamouseczema, with partial loss of hair and formation of scabs. The diagnosisis usually easy, as we can see the parasites and their eggs by separatingthe hair. Therapeutic Treatment.—This consists of destroying the parasitesand their eggs. For that purpose it is often requisite to clip the safest and least harmful agents are decoctions of tobacco (5 to 10per cent.), solutions of creolin (3 to 6 per cent.), petroleum (crude, ormixed with benzine, lysol or sapo-cresol), and in small dogs anise-seedoil (1 to 10 per cent, of olive oil). Mercurial ointment may be rubbed inthe neck around the collar, but we must not apply more than a piece thesize of a bean, as it is apt to cause salivation. Washing with corrosivesublimate solution has been tried, but it must be carefully done, as thesame precaution has to be taken as with mercury ointment, the animalnot being allowed to lick the body, as it is very apt to produce mercurial. CUTANEOUS DISEASES DUE TO ANIMAL PARASITES 465 symptoms of salivation. Insect powder (pyrethrimi), mixed withalcohol, can also be rubbed into the body. Ixodes Ricinus.—This parasite, which is about 2 mm. in length, andsometimes when full grown almost 3 mm., looks very much like anacarus. It penetrates into the skin and sucksthe blood, and is generally seen in setters orpointers, and dogs when working through thewoods and underbrush become filled with and petroleum will destroy them in-stantly, or, better still, a small quantity of chloro-form or ether sprayed on the skin makes themloosen their hold immediately. They should neverbe forcibly pulled away from the skin as they leave . . Fig. 165.—Ixodes ncinus. the mandibles m the skm and cause great irrita- The accompanying line istion and frequently an abscess. ^^^ natural size of the Leptus Autumnalis.—This is what is knownas a harvest bug or acarus. It is about 4 mm. in
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