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May 29, 1915


JAMA. 1915;LXIV(22):1850. doi:10.1001/jama.1915.02570480046017

It is thirty years since Nicolaier succeeded in producing tetanic symptoms in animals by inoculating them with soil. The micro-organisms responsible for this result are now known to occur in the superficial layers of the earth's surface. One bacteriologist has reported that soils from thirty-eight cities in different parts of the world were tested by him and that positive evidence of the tetanus bacteria was obtained from all except twelve of the cities. The fact that the soil of cultivated and manured fields seems to harbor the Bacillus tetani with especial frequency has been attributed to the probable presence of this germ in the dejecta of some of the domestic animals. Indeed, this is more than a mere supposition, since the bacillus has been found by some to be particularly abundant in the feces of horses. Pizzini1 even asserted that he had found it in 5 per cent, of

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