[1] Green vitriol, ferrous sulphate heptahydrate, a compound of iron, sulphur, and oxygen, crystallised with seven molecules of water, represented by the formula FeSO4<.>7H2O. On exposure to the air it loses water, and is gradually converted into basic ferric sulphate. For long, green vitriol was confused with blue vitriol, which generally occurs as an impurity in crude green vitriol. Blue vitriol is copper sulphate pentahydrate, CuSO4<.>5H2O.英文原著 · 《Bygone Beliefs》
She has La grippe. We have to stand very close together, for the room is small, and already contains three women, a man, a baby, a bedstead, a stove, and indescribable dirt. The atmosphere is rank with impurity. The man is evidently dying. Seven weeks ago he was "gripped." He is now in the last stages of pneumonia. Em has tried to induce him to be removed to the hospital, and he gasps out his desire "to die in comfort in my own bed." Comfort! The "bed' is a rack heaped with rags. Sheets, pillow-cases, and night-clothes are not in vogue in the slums.英文原著 · 《In Darkest England and The Way Out》
For them am I in such a family;
They did induce me into coining florins,
Which had three carats of impurity."英文原著 · 《Inferno》
One ray of the glory of God, one gleam of the purity of Christ, penetrating the soul, makes every spot of defilement painfully distinct, and lays bare the deformity and defects of the human character. It makes apparent the unhallowed desires, the infidelity of the heart, the impurity of the lips. The sinner's acts of disloyalty in making void the law of God, are exposed to his sight, and his spirit is stricken and afflicted under the searching influence of the Spirit of God. He loathes himself as he views the pure, spotless character of Christ.英文原著 · 《Steps to Christ》
"Man looketh on the outward appearance, but the Lord looketh on the heart"--the human heart, with its conflicting emotions of joy and sorrow; the wandering, wayward heart, which is the abode of so much impurity and deceit. 1 Samuel 16:7. He knows its motives, its very intents and purposes. Go to Him with your soul all stained as it is. Like the psalmist, throw its chambers open to the all-seeing eye, exclaiming, "Search me, O God, and know my heart: try me, and know英文原著 · 《Steps to Christ》