There is much more as good as this in _Iris_. For instance, one would hardly have looked for poetry in the laws of _bedikah_--the minute scrutiny of the carcasses of animals as regards symptoms of disease. But just as in Samson’s riddle out of the body of the lion there came forth sweetness, so in _Iris_ the author extracts aesthetics from the _bedikah_ rules, and sees in them evidence of the close observation of colors by the rabbinic legalists. “The colour of the lung especially is subjected to the most careful examination. It is reckoned healthy if it is black like the Eastern eye paint--that is, tending to blueish--or green like leek, or red, or liver-coloured, but it is declared to be unsuitable for eating if the colour is as black as ink, yellowish-green like hops, yellow like the yolk of an egg, yellow like saffron, yellow-red like raw flesh.” And after the recital, Delitzsch exclaims: “Is not this a rich variegated sampler of colours?” Since the date when Delitzsch wrote there has come about an important change in the opinion of anthropologists. Little more than a quarter of a century has passed, but all anthropological theorists no longer accept (though some still do) one theory on which Delitzsch builds, namely, that primitive peoples were color-blind. Several eminent authorities deny that savages lack the power to discriminate colors. The fact simply is that with advance in culture there enters greater precision in _nomenclature_; color-language becomes not so much more definite, as of wider range. But why? Surely not because of more accurate observation of natural tints. Culture associates itself with town life, and urbans are far more color-blind than rustics. At least, statistics are said to prove this, though Dr. Maurice Fishberg questions one of the inferences. The discussion has importance owing to the statement often made that Jews are more subject to color-blindness than Gentiles, the suggestion being that, as Jews live predominatingly in towns, they see less _green_ than do those who dwell in the country. Dr. Fishberg, on the other hand, maintains that, while the poor and ill-nourished are always susceptible to color-blindness, Jews of the well-nourished classes are quite as good distinguishers of shades of color as the rest of the population of the same social status.