Animal Parasites and MessmatesD. Appleton, 1876 - 274 pagini |
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Termeni și expresii frecvente
abdomen abode amphipod animal messmates annelids appears assistance attacks birds blood body Bothriocephalus branchial branchial cavity Caligi carapace cavity cercaria cestode cirrhipedes Claparède coast colour commensalism copepod crab creatures crustaceans curious cysticerci cysticercus damp earth decapod developed digestive distome echinoderm eggs embryos enclosed encysted establish female Fierasfer fish fleas free messmates gasteropod genus gives lodging harbours hatched holothuriæ hooks host ichneumons infested inhabit insects instal interior intestines Islands isopod kind known larva larvæ leeches lerneans Leuckart live male manner medusa mention messmates microscopic midst molluscs Mons mother mouth Müller mussels naturalists neighbour nematode nourishment observed organs pagurus parasites pass pinnotheres polyps prey produce Professor Semper progeny remarkable resemble scolex seek sexes sexual shell shelter side skin sometimes species sponge stomach Strongylus sucker Synapta tænia tæniæ Tania trematode trichinæ tube usually whale worms young
Pasaje populare
Pagina 85 - He is a pauper who needs help lest he should die on the public highway but who practises the precept — not to kill the fowl in order to get the eggs. It is at once seen that he is essentially different from the messmate who is simply a companion at table. The beast of prey kills its victim in order to feed upon his flesh: the parasite does not kill — on the contrary he profits by all the advantages enjoyed by the host on whom he thrusts his presence.
Pagina 80 - ... zoologist. It may be said, without exaggeration, that it is a biped, or even quadruped, worm. Let us imagine a clown from the circus, with his limbs as far dislocated as possible, we might even say entirely deprived of bones, displaying tricks of strength and activity, on a heap of monster...
Pagina 92 - No organ is exempt from their incursions, as they have been found in the brain, the ear, the eye, the heart, the blood, the lungs, the spinal cord, the nerves, the muscles, and even the bones.
Pagina 119 - Mexico had his glottis destroyed, and the sides of the roof of his mouth rendered ragged and torn, as if a cutting -punch had been driven into those organs.
Pagina 85 - THE parasite is lie whose profession it is to live at the expense of his neighbour, and whose only employment consists in taking advantage of him, but prudently, so as not to endanger his life. He is a pauper who needs help, lest he should die on the public highway, but who practises the precept — not to kill the fowl in order to get the eggs.
Pagina 1 - is he who is received at the table of his neighbour to partake with him of the produce of his day's fishing.
Pagina 188 - When by meditation, it became evident to me that spontaneous generation was one of the means employed by nature for the reproduction of living things, I applied myself to discover the methods by which this takes place.
Pagina xviii - For example, when making analogies between the "lower animals" and human societies, he compared industrialists leading the life of noblemen to parasites: In the ancient as well as the new world, more than one animal resembles somewhat the sharper leading the life of a great nobleman; and it is not rare to find, by the side of the humble pickpocket, the audacious brigand of the high road, who lives solely on blood and carnage. A great proportion of these creatures always escape, either by cunning,...
Pagina 16 - The pinnothere is a brigand who causes himself to be followed by the cavern which he inhabits, and which opens only at a well-known watchword. The association redounds to the advantage of both ; the remains of food which the pinnothere abandons are seized upon by the mollusc.
Pagina xxvi - All these mutual adaptations are pre-arranged, and as far as we are concerned, we cannot divest ourselves of the idea that the earth has been prepared successively for plants, animals, and man. When God first elaborated matter. He had evidently that being in view who was intended at some future day to raise his thoughts to Him. and do Him homage. w Van Beneden remained a lifelong opponent of the view that evolution resulted from a "struggle for life