. Fig. 35. — Fowl spirochsetosis. (From KoUe and Ketch, after Burri.) after infection. The organisms may live in the body of the tick for seven or eight months. That the tick is not a necessary host is shown by the fact that injection of the 1 Von Prowazek, S., Mem. Inst. Oswaldo Cruz. T. I, pp. 79- 80, 1911.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1915