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Amoeba amoeboid angles animal Annelida aperture appearance Barbadoes deposit beautiful become belonging body Cambridge estate canal cellules centre character ciliated colour conidia contained contractile Crustacea crystals described diameter diatom distinct duct earthworm Echinodermata examination exhibited extremity fact fibres fluid Foraminifera front view frustule genera genus gland glass granular granules hairs Hemiaulus horns hyaline inch Johnson Journal laminae lines margin mass matter membrane microscope Microscopical Society microscopists minute municated narcotine nature nerves nervous nucleus objects observations obtained opium oviduct paper pedicellariae plant plates Polycystina portion present primordial cells prism processes Professor protoplasmic pseudopodia puncta radiating raphides regard remarkable reptant Rhizopods sarcode seen segment organs side siliceous slides species specimens spermatozoid spines Stephanosphaera structure substance surface Synapta terminal tion tissue transverse Triceratium tubes valve vas deferens vascular vegetable vesicle vessels Volvox wall Wallich whilst zoospores
Page 19 - Nerves, Vessels, and Air-tubes (in the case of insects) to the Contractile Tissue of Muscle.
Page 301 - The contents of the cell behave in a similar manner to that of the external membrane ; it is neither elastic nor very soluble. The most successful experiment is made by allowing the copper solvent to come at once into contact with some length of the cotton hair. The solvent permeates some parts of the external membrane more easily than others, and causes a rapid expansion of the cellulose, which bursts the external membrane, and as this action is taking place at various portions of the same hair,...
Page 181 - If they be parasites, to what class and order do they belong? What is their nature, what their food? Truly these are puzzling questions. These organs, or creatures, have now been known for many years, have been examined and admired by many naturalists and anatomists, have been carefully studied and accurately delineated, and yet we know not what they are.
Page 262 - ... Those, indeed, who may not be disposed to acknowledge Triploceras as a genus well distinguished from Docidium, will call it rather Docidium gracile ; but, to my knowledge, not any forms yet described seem to show a transition or intermediate structure between the truncate extremities of Docidium (Breb.) and the lobed extremities of Triploceras (Bailey}; and until such a species presents itself, so far as I can see as yet, the distinctions between the two genera seem to be sufficiently well founded...
Page 282 - ... nervous supply at one single point only — I have been led to conclude that every muscular fibre is crossed by very delicate nerve-fibres, frequently, and at short intervals, the intervals varying much in different cases, but, I believe, never being of greater extent than the intervals between the capillary vessels.
Page 299 - O'Neill made a communication to this section, " On the Appearance of Cotton Fibre during Solution and Disintegration ;" these experiments referred to the application of Schweizer's solution of copper and ammonia. "Under the action of this solvent Mr. O'Neill considers that cotton exhibits spiral vessels situated either inside or outside the external membrane. In a paper read by the same gentleman, on the 18th of May, 1863, it is stated that spiral vessels are seen • See Mr.
Page 58 - I found the gray substance in particular very much congested; and not only were the vessels unnaturally dilated, but each was more or less surrounded by a granular and originally fluid exudation, in which the natural tissue of the part became broken down and ultimately dissolved. In fig. 1, a large triangular mass of this exudation is represented at...
Page 276 - SCIENCE GOSSIP. A Monthly Medium of Interchange and Gossip for Students and Lovers of Nature. Edited by JE TAYLOR, FLS, FGS, &c. Price Fourpence, or by post Fivepence.
Page 57 - April, 1863, a man fell a distance of twelve feet to the ground, by which the skin of the right leg was said to be severely bruised. On the llth of May he complained of stiff-neck, and some difficulty of deglutition. In the night his mouth became quite closed, and he had several fits of severe dyspnoea, accompanied by contraction of the muscles of the back. On the following day the surface of the body became cold and clammy, with large drops of sweat on his forehead. When lying supine on the bed,...
Page 177 - Echinus shell, whilst the anchors are merely modifications of the spines, and are used as organs for prehension or locomotion, and assist the animal in raising its vermiform body to the mouth of its tube, the anchors being withdrawn during the period of contraction of the Synapta, and contribute little or nothing to the powers of defending the animal from the attacks of its predatory enemies.