Eastern Utah Advocate | 1903-08-20 | Page 6 | Rain and Disease Germs

rain and disease germs in chicago in may at a timo time aben hen there had been no rain for three weeks six glass plates two and one half inches square were exposed in as many streets for one minute the plates were then incubated so that each particle cf c dust to which a germ was clinging would soon be surrounded with a colony of germs which could be seen and counted the average per plate was wan 1650 colon colonies los on the day following nearly an inch of of rain fell and on the next day similar plates were exposed at the same street corners which after development showed but colonies A good rain had diminished the number of microbes more than 80 per cent