the principle of removing the pits elementary conditions. Thus the disease-engendering atmos- by punching, is retained. phere of the cellar, rises upwards, penetrates the crevices of The improved form of the machine, which we illustrate in the flooring, and would escape from the building, but is… … T11., to whom all communications should be addressed. dark places. In a large district in a city the cholera ap- covered it, from the Isthmus of Darien, several years before, but did not give it the name. Magellan was a native of peared in only one house, traced to a pile of kitchen offal in << oe…
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