ANTIPARASITICS 161 



either according to their action into mange remedies, remedies 

 against fleas, lice, ticks, gad flies, etc., or according to their chemical 

 composition. The chemical subdivisions include antiparasitics 

 from the group of ethereal oils: Peru balsam, styrax, turpentine 

 oil, oil of anise, oil of caraway, flores pyrethri, petroselinum; alka- 

 loidal antiparasitics: nicotine, veratrin, cevadilla seed, staphy- 

 sagria; benzol derivatives: creohn, lysol, bacillol, carbolic acid, 

 tar, creosote, saHcyhc acid, naphthalin, naphthol ; metallic remedies : 

 mercurial preparations, arsenic, sulphur; alkalies: soap, soda, 

 potassium, caustic potash, caustic soda, caustic lime. The first 

 mentioned form of classification is most suitable for practical 

 therapeutics; according to this method the antiparasitics are 

 divided into the following groups: 



Mange Remedies. — The most important are creolin, tobacco, 

 arsenic, corrosive sublimate, Peru balsam, carbolic acid, tar, creo- 

 sote, lysol, bacillol, sulphur, soap, soda, potassium, lime. The fol- 

 lowing baths or "dips" are used in the treatment of sheep scab: 



1. Frohner's bath. Apply creolin liniment (creolin 1, alcohol 

 1, green soap 8) three to five days, then bathe twice in 2]^ per 

 cent, creohn solution. 



2. Gerlach's bath, (a) Preparatory bath: potash 2, lime 1, 

 water 50. (b) The mange bath proper: 3 per cent, tobacco 

 decoction (Roloff's modification: 5 per cent, tobacco decoction). 



3. Ziindel's bath: crude carbolic acid 1.5, lime 1, soda 3, soft 

 soap 3, water 260. A modification of this bath is to use 2 per 

 cent, tobacco decoction in place of the water. 



4. Tessier and Matthieu's bath: arsenic 1 to 1.5, iron sulphate 

 or alum 10 to 15, water 100. 



[Lime and sulphur dip : Mix 8 pounds of unslaked lime and 24 

 pounds of flowers of sulphur, add 30 gallons of water and boil for 

 not less than two hours. Allow sediment to settle, draw off the 

 clear Hquid and dilute up to 100 gallons. Use at a temperature of 

 100 to 110° F. and keep each sheep in the dip two minutes, duckmg 

 its head at least once; repeat in 10 days. 



Tobacco and sulphur dip: Take one pound of tobacco leaves 

 for each 6 gallons of dip desired, place in a covered boiler, cover 



