Popular science monthly . ly holdback the bacteria of all known infectiousdiseases, except such as hydrophobia,nteasles, foot and mouth disease, infan-tile paralysis, and yellow fever. These,too, are ultra-microscopic. While the precise type of ultra-microbepresent in the virus of running noses,sneezes, and tears has not yet beenidentified, experiments thus tar provethat the porcelain-filtered product willfiroduce colds in healthy people, andthat the mucus taken from the nose ofthose who suffer with colds, and weak-ened with water 90,000 times, stillretains this living virus. Tests of this llu
Popular science monthly . ly holdback the bacteria of all known infectiousdiseases, except such as hydrophobia,nteasles, foot and mouth disease, infan-tile paralysis, and yellow fever. These,too, are ultra-microscopic. While the precise type of ultra-microbepresent in the virus of running noses,sneezes, and tears has not yet beenidentified, experiments thus tar provethat the porcelain-filtered product willfiroduce colds in healthy people, andthat the mucus taken from the nose ofthose who suffer with colds, and weak-ened with water 90,000 times, stillretains this living virus. Tests of this lluid were made oneleven physically sound soldiers andfive drojis of it were squeezed into eachnostril of each of the men. The discovery followed that coldscould develop from eight hours to twodays after exposure to the infection. Allof the men caught cold within thisl)eriod, though sonu threw olT the effectsof the cold \irus williiii a few Imurs. Popular Science Montlilij 3 /.> Shoes of Esparto Straw WhichOutwear Leather. A Pair of These Esparto Fiber ShoesHave Been Known to Outwear a DozenPairs of the Ordinary Tanned-Hide Soles ESPARTO shoes, or shoes made of thetoughest and strongest of the coarsefibers, are still worn in Iberia and insome parts of Spain and is no shoe made which will outlastthem, not excepting leather-shoes. Onepair of Esparto siiocs has been knownto outwear about a dozen tanned hidesoles. This is due to their faculty ofpicking up and retaining in their inter-stices stony or gritty particleswhich wear like nails. As the shoes are wornconstantly pick up andretain these foreignparticles, and as fastas these are worn outthey are replaced auto-matically by others,providing the wearerof the shoes continueshis walking. Thus aself-soling process isconstantly going on. It is not uncommonin some parts of Spainor Portugal to hear thenati\es boast of wearinga pair of Esparto shoesfor twenty-five yearsor more. The soles willsurvive an aggregateexceeding
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
