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2. On the Dispersion of "N" Rays and on Their Wave-Length ................................................................................................................................................................................................................................................................................................................................................................................................

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3. On the Photographic Registering of the Action Produced by "N" Rays on a Small Electric Spark ................................................................................................................................................................................................................................................................................................................................................................................................

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4. On a New Species of "N" Rays ................................................................................................................................................................................................................................................................................................................................................................................................

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5. On Peculiarities Presented by the Action Which "N" Rays Exercise upon a Dimly Lighted Surface ................................................................................................................................................................................................................................................................................................................................................................................................

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6. On the Comparative Action of Heat and "N" Rays on Phosphorescence ................................................................................................................................................................................................................................................................................................................................................................................................

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7. Complementary Notes ................................................................................................................................................................................................................................................................................................................................................................................................

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8. Instructions for Making Phosphorescent Screens ................................................................................................................................................................................................................................................................................................................................................................................................

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9. How the Action of "N" Rays Ought to be Observed ................................................................................................................................................................................................................................................................................................................................................................................................

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