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... possibly that seen in the jellyfishes. All these organisms are provided with stinging-cells, called thread - cells ; but in many species the darts have no power of penetrating the human epidermis. The common species of jellyfishes can be handled freely without ...
... effect on the jelly-fishes. You can in fact, make one of these little Medusae insensible with ether, and in a few hours it recovers and swims about as lively as ever. These experiments demonstrate that even the gelatinous frame of a jelly-fish shows its own ...
... body cavity itself ! This gracious creature holding all the saucers together, turns upside down, and becomes forthwith —a jellyfish.’’ All it has now to do is to grow big, and develop either eggs or sperm-cells according to its sex-—for the sexes are separate ...
... THE YOUND FISH (ABOVE) IN THE GRIP OF A COLONY OF HYDROIDS —CREATURES RELATED TO THE ANEMONE WHERE IT WILL BE HELD OF THE JELLY-FISH INFANCY, AND SOME FEROCIOUS INFANTS. Camouflage In Nature, The Courtship of Animals, “Random Cleanings from Nature’s ...
... hydroids were all separately blown in glass and welded together in colonies. . . . The this line is the modelling of the jelly-fish and the squid. The former is entirel] colour was sprayed on with the air-brush. .. . Some of the ascidians . . were glass ...
... striking of them is a kind of floating jellyfish common in the warm open ocean far to the south and west of our islands. This is the dreaded Portuguese Man-of-war {Physalia), perhaps the most dangerous of all jellyfishes and certainly one of the most beautifully ...
... of suddenly appearing in swarms. The damage done to human beings is, of cour s e, accidental, for the stings, whether of jelly-fish, fish or sea-snake, result from specialised mechanismsnettle - cells, poison-spines or fangs designed for the capture of ...
... Camouflage, July 4,3 pm. Evolution of man, July 5,3 pm. Plants without flowers, July 6,3 pm. Lizards & snakes, July 7,3 pm. Jellyfish, July 10, 3pm. Life of parasites, July 12, 3pm. Game animals, July 13, 3pm. Plants & man, July 14, 3pm. The story of the ...
... simple pigment spot, simpler even than the pinhole camera, and very soon the lens is added. Even in so lowly a form as the jellyfish, the pigment is distributed in a layer to form a retina, with a recognisable lens for concentrating on it the rays of light ...
... to-day. I observe that jellyfish is said to live in I.ake TJrumiah, the water of which contains a greater proportion of salt than the Dead Sea itself. In a note written some months ago in this column, I referred to the jellyfish found in an African lake ...
... THE ILLUSTRATED LONDON NEWS TRA VEL ANNOUNCEMENTS Neither a battleship nor Portuguese, this member of the jellyfish family has nevertheless a formidable armoury. A colourful blue, gas-filled float, serving also as a sail, trails numerous deadly stinging ...
... with any solid body, the weapon flashes out and injects its poison. Some feed on small fishes and Crustacea, some on other jelly-fishes. The victims are instantly paralysed and carried up to the stump-like handle of the umbrella, at the end of which is the ...