rainy day, lest the religious impurity conducted through the rain should pass from the Jew to the Mussalman.” We have here a view of contagion that seems to agree with that of modern science, only the latter is physical, the former mystic or spiritual. Again, the choice of substances used for purification was not dictated by the modern idea of a cleansing quality, but by a certain superstitious logic which we can sometimes detect. If liquid substances have a natural affinity for contagion, then if we take them while they are uninfected and use them for lustration, they will easily absorb the impurities of our own persons and rid us of them; therefore the modern savage or the ancient Greek might think it desirable to daub himself with clay or mud to wash away his taint: and from this example we see how distinct these primeval lustral processes are from the modern hygienic washing, to which nevertheless they often bear a close resemblance. By a similar reasoning we {101} may explain an inconsistency that occasionally appears in the cathartic ritual; a substance impure as food might be used for purposes of lustration: for instance, we find garlic used as a cathartic in the worship of the Phrygian god Mên at Athens.[101.1] Fire, the universal purifier, may have been accredited with this power by right of its own nature, but partly in all probability because it was believed to dry up miasma and damp infection.[101.2] In the Zend-Avesta code, after drying for a whole year under the light of the sun, the corpse at last becomes pure; for by the same natural instinct that caused the aversion to blood, the sun’s light comes to be regarded as the purest thing in the world: meat cooked by its warmth is more sanctified than fire-cooked meat; and certain acts and states of man have a greater defilement in the sun’s face.