Published online by Cambridge University Press: 15 May 2009
Animals protected from fleas by means of a sufficiently broad layer of “tangle-foot” and placed in plague-infected houses do not contract plague, but the control animals, not so protected, on several occasions (24 per cent.) developed the disease. Out of 247 fleas caught on the “tangle-foot,” 60 p.c. were human, 34 p.c. were rat and 6 p.c. were cat fleas. Plague-like bacilli were demonstrated in the stomach contents of one out of 85 human fleas dissected, and of 23 out of 77 rat fleas.
page 469 note 1 vide supra, p. 430.
page 478 note 1 Tangle-foot is a sticky resinous preparation used for catching flies.