no 



Strickland (C). Note on a case of "Tick-Paralysis" in Australia. 



—Parasitologij, Cambridge, vii, no. 4, March 1915, p. 379. 

 A boy of eleven, who got a tick iu his ear while in the bush, became 

 sick and giddy four days later and subsequently unable to walk without 

 assistance. He recovered ten days after the tick, which was not 

 identified, had been removed, 



NuTTALL (G. H. F.). Observations on the Biology of Ixodidae, Pt. ii. 



—Parasitology, Cambridge, vii, no. 4, March 1915, pp. 408-456. 

 A further contribution to the biology to the Ixodidae [see this 

 Review, Ser. B, i, pp. 111-112] is given. Rhipicephalus sanguineus 

 requires three hosts upon which to feed in the larval, nymphal and 

 adult stages ; larvae were experimentally reared on dogs and rabbits, 

 nymphs on dogs, jackal and hedgehog, adults on dog and jackal. 

 The length of time the ticks feed varies with the host ; on dog 

 or jackal, the times were generally four days for the larva and 

 nymph respectively ; on a hedgehog, the nymphs required from 10-17 

 days. Females generally fed for eight days, w^hile the males remained 

 for an undetermined period. The temperature at which the host is 

 maintained does not seem to affect the length of the parasitic period. 

 Of 707 adults descended from two females, 285 were male and 422 

 female. The time required for metamorphosis from egg to larva is 

 17-19 days at 30° C, 75 days at 12° C. ; from larva to nymph 5-8 

 days at 30° C. ; from nymph to adult 11-12 days at 30° C. The 

 longevity of some unfed ticks was very marked, 1 out of 20 lots of 

 larvae survived for 253 days, while only 2 out of 55 nymphs survived 

 for 97 days ; out of 575 adults only 84 had died by the 569th day, the 

 females appearing to have even more vitahty than the males. tFnder 

 the most favourable conditions, notably at 30° C, during the period 

 of metamorphosis, the life-cycle may be completed in 63 days. It is 

 noted that Christophers has demonstrated by experiment that nymphs 

 and adults descended from females infected with Piroplasma canis, 

 and also adults emerging from nymphs which had fed on dogs suffering 

 from piroplasmosis, were capable themselves of producing this disease 

 in other dogs. 



Nuttall(G. H. F.). Artificial Parthenogenesis in Ticks.— Parasitology, 

 Cambridge, vii, no. 4, March 1915, pp. 457-461. 

 As a result of repeating his experiment on parthenogenesis in ticks 

 [see this Review, Ser. B, i, p. 155], the author is convinced that the 

 parthenogenesis observed was artificial, being induced by the method 

 employed for counting the eggs, i.e. the eggs were separated by immers- 

 ing them in normal salt solution and rubbing them about gently with 

 the aid of a camel's hair brush. Of 15,296 eggs comited, only 218 

 yielded larvae. 



Franchini (G.) & Mantovani (M.). Infection experimentale du rat 

 et de la souris par Herpetomonas miiscae-domesticae. [Experimental 

 infection of the rat and the mouse with Herpetomonas muscae- 

 domesticae.]—Bull. Soc. Path. Exot., Paris, viii, no. 3, 10th March 

 1915, pp. 109-111. 

 The authors have made experiments as to whether Herpetomonas 



