Handbook of medical entomology . be present in the Malpighian secretion and excrement of aninfected tick and when mixed with the coxal fluid may gain entryinto another fowl by the open wound caused by the ticks bite. They. 143. Spirochasta gallinanun. After Hindle. then elongate and redevelop into ordinary spirochaetes in the bloodof the fowl, and the cycle may be repeated. Hindles account is clear cut and circumstantial, and is quite inline with the work of Balfour, and of Leishman. Radically differentis the interpretation of Marchoux and Couw (1913). These investi-gators maintain that the gr
Handbook of medical entomology . be present in the Malpighian secretion and excrement of aninfected tick and when mixed with the coxal fluid may gain entryinto another fowl by the open wound caused by the ticks bite. They. 143. Spirochasta gallinanun. After Hindle. then elongate and redevelop into ordinary spirochaetes in the bloodof the fowl, and the cycle may be repeated. Hindles account is clear cut and circumstantial, and is quite inline with the work of Balfour, and of Leishman. Radically differentis the interpretation of Marchoux and Couw (1913). These investi-gators maintain that the granules localized in the Malpighian tubulesin the larvae and, in the adult, also in the o\ailes and the genital ductsof the male and female, are not derived from spirochaetes but that theyexist normally in many acariens. They interpret the supposed Typhus Fever and PedicuUdce 237 disassociation of the spirochtxte into granules as simply the firstphase, not of a process of multiplication, but of a degenerationending in the death of the parasite. The fragmented chromatinhas lost its affinity for stains, remaining always paler than that ofthe normal spirochastes. On the other hand, the granules of Leish-man stain energ
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
