way of trade, adulterated with red lead, to increase his profit, without any suspicion of the use to which it would be applied; and the purchaser who adulterated the annatto, presuming that the vermilion was genuine, had no hesitation in heightening the colour of his annatto with so harmless an adjunct. Thus, through the diversified and circulatory operations of commerce, a portion of deadly poison may find admission into the necessaries of life in a way that can attach no criminality to the parties through whose hands it has successively passed." The curious aspect of this circuitous kind of poisoning is, that it occurs through the belief of each adulterating rogue in the honesty of his neighbour. If we could possibly eliminate, from the mass of human disease, that occasioned by the constant use of deleterious food, we should find that it amounted to a very considerable percentage on the whole, and that one of the best friends of the doctor would prove to be the adulterator. But even our refuge fails us in our hour of need; the tools of the medical man, like those of the sappers and miners before Sebastopol, often turn out to be worthless. Drugs and medical comforts are perhaps adulterated as extensively as any other article. To mention only a few familiar and household medicines for instance: Epsom salts are adulterated with sulphate of soda; carbonate of soda with sulphate of soda--a very injurious substitute. Mercury is sometimes falsified with lead, tin, and bismuth; gentian with the poisonous drugs aconite and belladonna; rhubarb with turmeric and gamboge; cantharides with black pepper; and cod-liver and castor-oils with common and inferior oils; whilst opium, one of the sheet-anchors of the physician, is adulterated to the greatest extent in a dozen different ways. Medical comforts are equally uncertain. Thus potato-flour forms full half of the so-called arrowroots of commerce; sago-meal is another very common ingredient in this nourishing substance. Out of fifty samples of so-styled arrowroot, Dr. Hassall found twenty-two adulterated, many of them consisting _entirely_ of potato-flour and sago-meal. One half of the common oatmeals to be met with are adulterated with barley-meal, a much less nutritious substance--an important fact, which boards of guardians should be acquainted with. Honey is sophisticated with flour-starch and sugar-starch. And lastly, we wish to say something important to mothers. Put no faith in the hundred and one preparations of farinaceous food for infants which are paraded under so many attractive titles. They are all composed of wheat-flour, potato-flour, sago, &c.,--very familiar ingredients, which would not take with anxious parents unless christened with extraordinary names, for which their compounders demand an extraordinary charge. To invalids we would also say, place no reliance on the Revalentas and Ervalentas advertised through the country as cures for all imaginary diseases. They consist