Category : Fish & Ocean Life

Marvels of Pond-life, Second Edition [Illustrated]

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This edition features• illustrations• a linked Table of Contents and linked FootnotesCONTENTSCHAPTER I. MICROSCOPES AND THEIR MANAGEMENT. Powers that are most serviceable—Estimated by Focal length—Length of Body of Microscope and its Effects—Popular Errors about Great Magnification—Modes of Stating Magnifying Power—use of an 'Erector'—Power of various Objectives with different Eye-pieces—Examination of Surface Markings—Methods of Illumination—Direct and Oblique Light—Stage Aperture—Dark-ground Illumination—Mode of Softening Light—Microscope Lamps—Care of the EyesCHAPTER II. JANUARY. Visit to the Ponds—Confervæ—Spirogyra quinina—Vorticella—Common Rotifer—Three Divisions of Infusoria—Phytozoa—Protozoa—Rotifera—Tardigrada—Meaning of these Terms—Euglenæ—Distinction between Animals and Vegetables—Description of Vorticellæ—Dark-ground Illumination—Modes of producing it—The [viii]Nucleus of the Vorticella—Methods of Reproduction—Ciliated Protozoa—Wheel-bearers or Rotifers—Their Structure—The Common Rotifer—The young Rotifer seen inside the old one—an Internal Nursery—'Differentiation' and 'Specialization'—Bisexuality of Rotifers—Their Zoological Position—Diversities in their Appearance—Structure of their Gizzard—Description of RotifersCHAPTER III. FEBRUARY. Visit to Hampstead—Small ponds—Water-Fleas—Water-Beetle—Snails—Polyps—Hydra viridis—The Dipping-tube—A Glass Cell—The Hydra and its Prey—Chydorus Sphæricus and Canthocamptus, or Friends and their Escapes—Cothurnia—Polyp Buds—Catching Polyps—Mode of Viewing Them—Structure of Polyps—Sarcode—Polyps Stimulated by Light—Are they Conscious?—Tentacles and Poison Threads—Paramecium—Trachelius—Motions of Animalcules, whether Automatic or directed by a Will—Their Restless CharacterCHAPTER IV. MARCH. Paramecia—Effects of Sunlight—Pterodina patina—Curious Tail—Use of a Compressorium—Internal Structure of Pterodina—Metopidia—Trichodina pediculus—Cothurnia—S

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