. International record of medicine . some particular frequency or fre-quencies might affect the nervous system. We hope to de-cide this question, within a salable range of frequency,at some future time. The ordinary magnets used in medicine have apurely suggestive or psychic effect, and would in allprobability be quite as useful if made of wood. While we have demonstrated conclusively theabove facts, we do not deny the possibility of therebeing invented some day magnets enormously morepowerful than any yet known to us, which may pro-duce effects upon the nervous system perceptible tosome of th
. International record of medicine . some particular frequency or fre-quencies might affect the nervous system. We hope to de-cide this question, within a salable range of frequency,at some future time. The ordinary magnets used in medicine have apurely suggestive or psychic effect, and would in allprobability be quite as useful if made of wood. While we have demonstrated conclusively theabove facts, we do not deny the possibility of therebeing invented some day magnets enormously morepowerful than any yet known to us, which may pro-duce effects upon the nervous system perceptible tosome of the sensory organs ; for magnetism is certainlya remarkable force, and we find it very difficult tounderstand why it seems to have no influence what-ever upon the human body and its wonderfully delicateneuro-electric mechanism. FiQ. 3.—Type of dynamo need sptrimentB on tlie human head. The armature iin place. ACUTE INFLAMMATORY AFFECTIONSOF THE MAMMiE, WITH SPECIAL REFERENCE TO TREATMENT DnRING LACTATION.* By ALl^ERT H. ELY. M. D.,. Fig. 4.—Showing nnii-ly tlie i)ole-pieccB of the dynamo, witli the ar-mature removed. The head wasplaced in the cavity between them. resistance of the coil was 10 ohms, and its inductance 0-V3henry. An alternating electro-motive force of 1,200 volts,making 140 cycles or 280 alternations to the second, wasconnected with this coil, the current supplied being T85amperes. The magnetic fieldin the coil would thus be re-versed 280 times to the sec-ond. Each of the authorsacted as subjects in the ex-periments, permitting the1,200-volt alternating cur-rent to be made and brokenfrequently in the huge mag-netic coil surrounding hishead. No effect whateverwas experienced. The coil itself hummed with the cur-rent, and a strip of sheet iron held in the cavity ofthe coil, but not touching it, vibrated perceptibly in thehand and gave a distinct, loud sound which was determinedto be middle C of the musical scale by means of Ilelmholtzresonators. The authors concl
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectmedicine, bookyear186
