scabiei of the dog, and is slightly larger. In 1884, a serious epidemic 

 of parasitic otitis in ferrets occurred all over the north of France, 

 especially near Calais, due to Chorioptes cynotis furonis, Megnin. The 

 animals did not appear to suffer such pain as dogs and cats attacked 

 by parasitic otitis, but the death rate was very heavy, 



Todd (J. L.). Paralysis and Tick-Bite. — Canadian Med. Assoc. Jl., 

 Toronto, iv, no. 9, September 1914, pp. 825-826. 



Paralysis ascribed to the bites of ticks has been observed in children 

 and possibly adults — in the latter in British Columbia alone — in 

 British Columbia, Oregon, Wyoming, Montana and Australia, whilst 

 a paralysis of sheep is attributed to the same cause in British Columbia 

 and South Africa. The ticks belong to three or more species. Paralysis 

 has been experimentally produced in lambs and in a dog by the bites of 

 Dermacentor venustus. The paralysis is quite distinct, both from the 

 recognised diseases known to be transmitted by the bites of ticks to 

 men, and from certain other insufficiently defined affections which 

 have been described as due to tick bites. A young child, perfectly 

 well one day, has more or less complete paresis or paralysis on the 

 next, fever, a rapid pulse and other constitutional symptoms being 

 also present in most cases. The child may be dull and stupid and may 

 have convulsions. If the tick is not found and removed, the child may 

 die, but if it is removed, the symptoms disappear, recovery being 

 complete within a few hours. The tick should be entirely removed or 

 local inflammation may result. Gentle traction often causes the tick 

 to loose its hold, or the minute portion of skin, in which the mouth 

 parts are buried may be removed with scissors. The author hopes 

 that every case ascribed to ticks will be carefully examined and 

 recorded. [See this Review, Ser. B, i, p. 204]. 



Owen (G. E.). Mechanical Transmission in Trypanosomiasis.— J^ 

 Com. Path. TJierapeut., London, xxvii, no. 3, September 1914, 

 pp. 259-260. 



It is suggested that mechanical transmission in trypanosomiasis 

 can become a serious factor, given suitable opportunities. Between 

 1908 and 1913, some 2,500 to 3,000 head of cattle died of the disease 

 in the Barotse reserve of Northern Ehodesia, which is free from 

 Glossina morsitans. The wet months are from December to March 

 and biting flies are most numerous at this season. The mortahty 

 began each year about the beginning of February and practically 

 ceased after June. Although there were some dozen horses in this 

 region (some bred every year), and numerous dogs, sheep and goats, 

 no cases of natural infection among them are known. The strain of 

 trypanosome in question was not, however, pathogenic to cattle only, 

 for it was found that horses, sheep, goats and dogs were all easily 

 infected by inoculation, particularly dogs. Transport riders with 

 dogs lost many of their oxen, but never any dogs. One trader, who 

 lost at least 1,000 head of cattle, bred horses on the very spot where his 

 cattle died in numbers, but had no losses (except from South African 

 horse sickness). In seeking for an explanation of these facts, the first 

 point requiring notice is that trypanosomiasis was definitely confined 

 to certain herds, others grazing over the same ground being free, and in 



