170 



those containing pyrethrum, sulphur, or naphthaline, while sodium 

 fluoride is very efficient against biting lice, but is of no value in 

 destroying sucking lice. 



Sarcoptic mange caused by the mite, Sarcoptes scabiei var. equi, 

 is widely distributed and very difficult to cure, because the mite lives 

 so far beneath the outer layers of the skin. The principle to be 

 observed in the treatment of mange is first to soften the scabs and 

 scales by washing and then apply a parasiticide so that it will penetrate 

 to the mites. One treatment that has given good results consists 

 in turning the animals out to grass for 2 or 3 months, at the same 

 time providing plenty of good water, grain and hay. 



Preventive measures include attention to grooming ; frequent 

 inspection of all animals ; isolation of newly joined remounts for 21 

 days ; all cases of skin irritation to be isolated till cured, as these may 

 be due to neglected grooming, lice or mites from other sources, such 

 as bedding, forage, or buildings occupied by fowls ; and the disinfection 

 of all stalls before putting animals into them. 



Symbiotic mange caused by Chorioptes bovis var, equi, and psoroptic 

 mange caused by Psoroptes communis var. equi are much less common, 

 and easier to cure than sarcoptic mange, the same treatments being 

 applicable. 



HoLLiSTER (W. L.). Parasites of Swine. — Jl. Atnerican Vet. Med. 

 Assoc, Ithaca, N.Y., liii, (N.S. vi), no. 3, June 1918, pp. 330-334. 



Lice are common on pigs, the hog louse, Haematopinus suis, being 

 the largest of all species infesting domestic animals. In some localities 

 pigs are also infested with fleas. Lice are easily controlled by the 

 use of recognised dips and by the application of crude oil through 

 the agency of patented rubbing posts. Keeping the bedding and 

 styes well dusted with naphthaline powder is the cheapest and most 

 satisfactory method of control. 



Demodectic mange caused by Demodex folliculorum suis is a type 

 of mange that spreads very slowly and is very difficult to treat. The 

 most practical method is to get rid of the infested animals and clean 

 and disinfect the premises. 



Sarcoptic mange caused by Sarcoptes scabiefl, suis may be successfully 

 treated with a lime and sulphur dip or nicotine. 



Knowles (A. D.). Parasites of Sheep. — Jl. American Vet. Med. Assoc, 

 Ithaca, N.Y., hii (N.S. vi), no. 3, June 1918, pp. 334-344. 



Oestrus ovis causes a parasitic affection in sheep owing to the adult 

 ovipositing in the anterior nares. The larvae, having migrated to 

 the frontal sinuses, set up symptoms of disease several months later. 

 Treatment is practicable only in valuable sheep and in small flocks, 

 and is not followed by satisfactory results as a rule. Preventive 

 measures are to be preferred, such as smearing the sheep's nose daily 

 with fish-oil, oil of tar, or a mixture of sulphuric acid 6 drachms, 

 turpentine 2 oz. and cottonseed oil 2 pints. The methods of dealing 

 with the larvae in the frontal sinuses include inhalations of sulphur 

 fumes, steam inhalations of turpentine or the coal-tar disinfectants, 

 or trephining and extracting the larvae Vvath forceps. 



