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SCIENCE GOSSIP., J• I.oj4.-

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SCIENCE GOSSIP., J • I. oj 4.- STUDENTS of the New Mesmerism" will -find an -admirable elementary guide to its theory and experi- mental investigation in a little pamphlet Just written by Mr. Ernest Hart. It is entitled Hypnotism, Animal Magnetism, and Hysteria." In some carious passages Mr. Hart shows how at the end of last -ftntury Meemor and his dnpes were going through performances exactly like those that the medical mystagogues of Paris and their patients are giving now. Here it may be said that Tom Paine in a letter to the Prospect, a paper published in New York, describes the same sort of thing; and we do not doubt that Mr. Hart will be interested to learn that his own researches were anticipated by no less famous a person than Dr. Benjamin Franklin when 08 a diplomatic mission to Paris. PAIKS'S description of Franklin's investigations might verily stand as a true account of Mr. Ernest Hart's own experiments conducted the other day for the purpose of exploding all this quackery. Franklin, it seems, was invited to co-operate with a Govern- ment Committee which was sent to test the genuine- now of the phenomena of the old meemerism in Paris. Oddly enough, they worked on the very tame lines as Mr. Hart did. The patients were put in position by the mesmerist, and blindfolded. Then in due course they went through all their capers. But when they were doing this, no operator was doing anything to them. Franklin and the committee had, in fact, put the mesmerist out of the room, only the subjects didn't know it, and imagined he was mag- netising them in the old way. Itwas all imagination, and Franklin said to Paine, almost in the very words of one of our notes last week, "as imagination some- times produced disorders, it might also cure, some." HOUSEHOLDERS are always asking their scientific friends, How can we get most light out of our gas ? The answer is by diminishing as much as possible the blue part of the flame, and heating its blackish carbon particles to luminous incandescence. Sir James Douglass did this rather cleverly by having a lot of flames one burning inside the other. A current of air hit the outer flames at the base, and though they -did -not give much light the inner ones were so intensely heated that they glowed with double power. Another plan is to make the flames from two burners impinge on one another. Of oourse part of the heat radiated from one flame heats the other, and the up-draught at the base produces an intense glow on the blue part of the gas-flame. Cluster burners used in street lamps illustrate the working of this plan. But the latest experiments of Professor Lewes seem to show that if we want to make a flat flame burn more brightly we must make it thicker, and then by some dodge get a strong draught of air to play on the flat part of the bottom of the flame. Pro- fessor Lewes thinks that among simple burners now in use the well-known London." Argand gives the best result with the bad gas the companies deign to give us. With richer gas it would not act so well. He also thinks that the great reform of the future in gas-lighting will be an overhauling of the .common Darners in London, for obviously the waste of gas from bad methods of consumption is not again to he companies. But may we note that it is a positive us to the consumer, who could easily, if he had toper burners, get twice as much light as he does ow from the amount of gas he pays for. aUK beautiful and picturesque old river, the Ladon river, not" t'other river," as the Medway is eotemptuously called by Thames fishermen, has pre- Mted the scientific world of Cockneydom with a nø worm. It has been called Sparganophilus Taicsis, because it was found near Goring, clinging in quite a loving manner to the roots of Sjparganium rajriosum. It has a cocoon dram out to a point: at one end, and at the othr narrowly frayed. Dr. W. B. Benham, who four! the creature, has been considerably puzzled by I for it belongs to a fine, old American family- thflsRhinodrilidæ, and the question is, How did it coin into the Thames ? Some say the cocoons may havtbeen introduced with the roots of water plants. But hen, how do the roots of American water plants get hre P A more likely suggestion is that it has eomem with timber shipped from the. United State* FeR fine, frank, freeborn, unmitigated barbarian tio has sonnd, thoroughgoing principles of aavagerjiB the ethical basis of life-we commend the Bonjo t<the anthropological student. M. Dybrowski came as him, he says, on a journey from Mobangi to the Shri, and he found the average Bonjo to re- present te cannibal rampant. No such monster is to be found outside Shakespeare's play, where the man eaters, who carry their heads under their arm as if they were dandies stowing their crus-hata at a ball, are described. The Bonjos, it eems, have simplified their commercial system in » way that Mr. Lowfher and all grabbing landlords rust regard with envy. They hate free trade. Thy decline to barter. They will not buy anything bu slaves, and they buy them because they love to eat hem. You can purchase no food such as you would ore to eat from them unless you can sell them a slavi, the only food they care to eat that they will buy frol you. The position of a member of the Anbi-SlaverjSociety short of supplies in the Bonjo -country woufl therefore be one of extreme embar- rassment. A GUTLJlMA{ has just died in Paris who must all his life have ben playing without knowing it an in- ,finite numbenf practical jokes on his doctors. Un- fortunately, ashe is dead, we have no means of find- ing out from tim the details as to his consultations with them. did not, it is true, die of anything in particular, BO a post-mortem was orderecH When Dr. Deeonts, of the Morgue—a famous pathologist fcamined the body, he found that it was all thrawn," as the Scots would say. The heart, liver, tod spleen were all on the wrong aides-the heart on the right, thy liver on the left, &c. Dr. Oliver Vendell Holmes, it may be remem- bered, in one of his fantastic Breakfast Table sketches, creates an abnormal person of this description, but the practical point is obvious. When this gentleman went to his doctors how did they make their diagnoses of his complaints ? Dr. Descouts has been pressed to go into this matter and see if he can get any information from the physicians of the malformed deceased. But he declines-probably because he does not want to bring ridicule on professional brethren. He prefers to say with a sweet smile that inquiry is not necessary, because it is clear from the advanced age of the subject that he never could have eonaulted a doctor in his life.-Daily Chronicle.

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