Animal Parasites and MessmatesD. Appleton and Company, 1876 - 274 pagini |
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Pagina xx
... belong to the order of cestode and trema- tode worms . These flat and soft worms begin life usually as vagabonds , aided by a ciliary robe which serves as an apparatus for locomotion ; but scarcely have XX INTRODUCTION .
... belong to the order of cestode and trema- tode worms . These flat and soft worms begin life usually as vagabonds , aided by a ciliary robe which serves as an apparatus for locomotion ; but scarcely have XX INTRODUCTION .
Pagina xxiii
Pierre Joseph Beneden. nounced to the " Institut de France , " that cestode worms must necessarily pass from one animal to another in order to complete the phases of their evolution . At the present time , experiments respecting these ...
Pierre Joseph Beneden. nounced to the " Institut de France , " that cestode worms must necessarily pass from one animal to another in order to complete the phases of their evolution . At the present time , experiments respecting these ...
Pagina xxvi
... cestode worms completely disappear . It is only the imprisoned parasites which do not desert them . All these mutual adaptations are pre - arranged , and as far as we are concerned , we cannot divest ourselves of the idea that the earth ...
... cestode worms completely disappear . It is only the imprisoned parasites which do not desert them . All these mutual adaptations are pre - arranged , and as far as we are concerned , we cannot divest ourselves of the idea that the earth ...
Pagina 90
... cestode worms . They are so numerous as to form a kind of cork , which one might think intended to close the pas- sage of the pylorus . Some authors give remarkable instances of the abun- dance of parasites . Nathusius speaks of a black ...
... cestode worms . They are so numerous as to form a kind of cork , which one might think intended to close the pas- sage of the pylorus . Some authors give remarkable instances of the abun- dance of parasites . Nathusius speaks of a black ...
Pagina 99
... cestode causes the death of a third part of the population . Worms develop themselves in the eye , and may even cause blindness ; the Conurus of the sheep causes giddi- ness , and becomes fatal to the animal which harbours it . The ...
... cestode causes the death of a third part of the population . Worms develop themselves in the eye , and may even cause blindness ; the Conurus of the sheep causes giddi- ness , and becomes fatal to the animal which harbours it . The ...
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Termeni și expresii frecvente
abdomen abode acaridæ amphipod animals annelids appearance attacks birds blood body Bothriocephalus branchial cavity Caligi carapace cavity cercaria cestode cirrhipedes coast completely crab creatures crustaceans curious cysticerci cysticercus damp earth decapod developed digestive distome echinoderm eggs embryos enclosed establish female fish fleas free messmates gasteropod genus gives lodging gnats harbours hatched Hirudinidæ hooks horse host ichneumons infested inhabit insects intestines isopod kind known larva larvæ leeches Leuckart lice live male manner mention messmates microscopic midst molluscs Mons mother mouth Müller naturalists neighbour nematode nourishment observed organs pagurus parasites pass peculiar peritoneum pinnotheres polyps prey produce Professor Semper Pulex remarkable resemble scolex seek sexes sexual shell shelter singular skin sometimes species sponge stomach Strongylus suck sucker Tænia solium tæniæ Tania tape-worm trematode true parasites tube usually whale worms young
Pasaje populare
Pagina iv - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance