Abstract
Journal of the Royal Microscopical Society, vol. ii. Nos. 7 and 7a, contains:—Transactions of the Society.—W. H. Gilburt, On the morphology of vegetable tissues (Plates 22 and 23).—J. Beck, On the structure of the scale of a species of the genus Mormo.— Prof. E. Abbe, On new methods for improving spherical correction, applied to the construction of wide-angled object-glasses.— H. E. Forrest, On the anatomy of Leptodora hyalina (Plates 24 and 25).—Dr. H. Stolterfoth, On a new species of Eucampia.—John Mayall, jun., On an immersion stage, illuminator, and on aperture measurements of immersion objectives expressed, as “numerical aperture.”—J. W. Stephenson, On a table of numerical apertures showing the equivalent angles of aperture of dry, water immersion, and homogeneous immersion objectives, with their respective resolving powers, taking the wave-length of line E as the basis; a = n sin. w, n = refractive index, and w = 1/2 angle of aperture.—The record of current researches relating to zoology, botany, and microscopy.—Bibliography.—Proceedings of the Society.—The editor announces that the Society has obtained the assistance of Mr. T. Jeffery Parker, Mr. A. W. Bennett, and Prof. F. Jeffrey Bell in the production of the journal.—No. 7a is a supplementary number containing the index to vol. ii., List of Fellows of the Society, &c.
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Scientific Serials . Nature 21, 243 (1880). https://doi.org/10.1038/021243a0
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DOI: https://doi.org/10.1038/021243a0