Abstract
IN reference to your report of the Boston Natural History Society in NATURE of 27th January, nothing more is requisite to amplify the power of a microscope than to cut off the rims of two or three eye-pieces and insert them in pairs into the ends of a draw tube. Any degree of amplification can be obtained whilst the achromatism is preserved. The Huyghenian eye-piece has generally been preferred because the dust accumulating on the inverted eye lens of a positive eye-piece is inconveniently magnified, and obscures the field of view. To those who are desirous of trying Professor Listing's plan, described in your last number, this simple method of mounting may be acceptable.
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PIGOTT, R. Professor Listing's Amplifier. Nature 1, 430 (1870). https://doi.org/10.1038/001430b0
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DOI: https://doi.org/10.1038/001430b0
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