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Rh of plausible imposture. The skilful knave, with his new process and patent-right, practises on this half-knowledge of the community, and enriches himself at the expense of his victims. He is very candid, and would have them take nothing on trust. He will bring his idea to the test of experiment. They shall see for themselves, and need take nobody's word. “This arrangement will produce such an effect. I don't ask you to accept my statement, I will demonstrate it;” and with an impressive parade of fixtures, and much scientific talk, the alleged wonderful things are done. With those who have not thoroughly learned that every thing depends not upon effects produced, but upon their quantities, the next step of the unscrupulous patent-agent is easy. Having established himself in his customer's confidence, he does the rest by profuse asseveration and persistent lying. “The facts are proved; it is a new discovery; it will revolutionize the business, and somebody is going to make enormous profits you had better have some of the stock.” But the skilful speculator may go still further. If sharply met by the question of economy, or exactly how much is gained by his process, he may proceed to prove his claim on the spot. He may demonstrate experimentally and completely that his operation has the advantage by many per-cent. [sic] over those in use, while the project is still a worthless fraud: for it is possible in a small way, and with careful experiments, to produce quantitative results which cannot be realized on the manufacturing scale.

There is no end to the schemes that are palmed off upon the public in this way. A morning paper that has just come to hand has the following item:

"Will water burn? And, if so, can burning water be used at a moderate cost for fuel? The public mind of Peoria, Ill., has been of late much exercised upon these questions. A stranger and a Yankee came to the city and claimed that, by burning mixed water and oil in it, he could heat a common cooking-stove red-hot in five minutes. The proportions were four gallons of oil to five gallons of water, and with this quantity the inventor declared that he could run a steam-engine for thirty days, heat twelve furnaces, or light a whole city with gas. The oil was worth 50 cents a barrel, and cooking, heating, and lighting, were thus to cost almost nothing. A stock company was started to push the enterprise, and it was found that ‘by the aid of twelve gallons of oil two gallons of water could be evaporated.’ It didn't promise overwhelming dividends. The corporation disembodied itself as fast as possible, and the inventor, packing up his gas-pipes and oil-cans, left Peoria, to enlighten and warm some other region."

How true this statement may happen to be, we do not know; but we do know that analogous cases are abundant.

These consequences are a natural result of superficial scientific teaching. A little science is now dispensed in all schools; but it is generally the qualitative rudiments that are easiest taught, and which serve only to make pedants of the pupils. A mass of the simpler facts are memorized as mere sensational acquisition, and there is very little training in principles, or scientific method. It is not to be expected that in general education students will possess themselves of all the higher qualitative data of science, so as to be able to meet any emergency with ready and accurate information. But, for protection from such impositions as we have here noticed, there should be such a cultivation of the scientific judgment as will guard against the grosser fallacies put forth by unscrupulous projectors.

The article in our present number, on the physiological position of alcohol, by Dr. Richardson, an eminent physician of London, is the freshest exposition of the subject yet offered. Its