Word: filter
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...XRay Filter...
...tradition to kindle the spirit of war. Americans may never be able to comprehend the tangled heritage of poetry and religion that gives hara-kiri such a control over the Eastern imagination, but at least they may see the results of such control. A hint may even filter through to the effect that what to one nation may seem nothing but a diplomatic incident to another may become an issue of national importance...
...Professor Herbert E. Roaf expressed his belief that it will be possible to correct colorblindness or "hypochromatic vision" by wearing over one eye a color filter or colored eyeglass...
...disease is still unknown. A number have been cultivated from the virus, but their identity with the germ is doubtful. It may be destroyed by heating to 60° Centigrade, and has been demonstrated by German investigators to be capable of passing through the pores of a porcelain filter. It probably belongs therefore to the class of ultramicroscopic organisms called filterable viri. One attack of the disease usually confers immunity on the cattle for several years, and animals have been imunized artificially by dosages of the sera of infected animals...
Common colds are infectious and are probably due to an ultramicroscopic germ. These are the findings of Dr. Peter K. Olitsky and Dr. J. E. McCartney, of the Rockefeller Institute for Medical Research, after four years of experiments on human volunteers. Filtered washings from the noses of cold sufferers were injected into healthy persons, who promptly developed colds, which were in turn transmissable. The causative germ could not be seen, although cultures were grown from the secretions of 40 patients. Either the germ is so small that it cannot be seen through the most powerful magnification (about 1,500 times...