What is it that the sanitary agitators want? To tan and freckle all their countrywomen, and to make Britons apple-faced? The Persian hero, Rustum, when a baby, exhausted seven nurses, and was weaned upon seven sheep a day, when he was of age for spoon-meat. Are English babies to be Rustums? When Rustum’s mother, Roubadah, from a high tower first saw and admired her future husband Zal, she let her ringlets fall, and they were long, and reached unto the ground; and Zal climbed up by them, and knelt down at her feet, and asked to marry her. Are British ladies to be strengthened into Roubadahs, with hair like a ship’s cable, up which husbands may clamber? In the present state of the mania for public health, it is quite time that every patriotic man should put these questions seriously to his conscience. One topic more. Let it clearly be understood, that against artificial light we can make no objection. Between sun and candle there are more contrasts than the mere difference in brilliancy. The light which comes down from the sky not only eats no air out of our mouths, but it comes charged with mysterious and subtle principles which have a purifying, vivifying power. It is a powerful ally of health, and we make war against it. But artificial light contains no sanitary marvels. When the gas streams through half a dozen jets into your room, and burns there and gives light; when candles become shorter and shorter, until they are “burnt out” and seen no more; you know what happens. Nothing in Nature ceases to exist. Your camphine has left the lamp, but it has not vanished out of being. Nor has it been converted into light. Light is a visible action; and candles are no more converted into light when they are burning, than breath is converted into speech when you are talking. The breath, having produced speech, mixes with the atmosphere; gas, camphine, candles, having produced light, do the same. If you saw fifty wax-lights shrink to their sockets last week in an unventilated ball-room, yet, though invisible, they had not left you; for their elements were in the room, and you were breathing them. Their light had been a sign that they were combining chemically with the air; in so combining they were changed, but they became a poison. Every artificial light is, of necessity, a little workshop for the conversion of gas, oil, spirit, or candle into respirable poison. Let no sanitary tongue persuade you that the more we have of such a process, the more need we have of ventilation. Ventilation is a catchword for the use of agitators, in which it does not become any person of refinement to exhibit interest.