Animal Parasites and MessmatesD. Appleton and Company, 1876 - 274 pagini |
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Pagina xix
... serves him as a nurse , and at last eats her entirely , can we call him a parasite ? According to Lepelletier de Saint - Fargeau , who has so successfully treated these questions , the parasite is he who lives at the expense of another ...
... serves him as a nurse , and at last eats her entirely , can we call him a parasite ? According to Lepelletier de Saint - Fargeau , who has so successfully treated these questions , the parasite is he who lives at the expense of another ...
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 xxi
Pierre Joseph Beneden. serves as an apparatus for locomotion ; but scarcely have they tried to use their delicate oars , before they demand assistance , lodge themselves in the body of the first host that they meet , whom they abandon ...
Pierre Joseph Beneden. serves as an apparatus for locomotion ; but scarcely have they tried to use their delicate oars , before they demand assistance , lodge themselves in the body of the first host that they meet , whom they abandon ...
Pagina xxii
... serves them both as a cradle and a tomb . Some years since , no one suspected that a parasite could live in any other animal than that in which it was discovered . All helminthologists , with few exceptions , looked upon worms in the ...
... serves them both as a cradle and a tomb . Some years since , no one suspected that a parasite could live in any other animal than that in which it was discovered . All helminthologists , with few exceptions , looked upon worms in the ...
Pagina 17
... serves as a vessel for holy water ; and it lives doubtless in many other bivalves which have not yet been examined . Dr. Léon Vaillant has written a very interesting memoir on the Tridacnæ , and informs us that the crab takes shelter in ...
... serves as a vessel for holy water ; and it lives doubtless in many other bivalves which have not yet been examined . Dr. Léon Vaillant has written a very interesting memoir on the Tridacnæ , and informs us that the crab takes shelter in ...
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Termeni și expresii frecvente
abdomen abode acaridæ acarus amphipod animal annelids appearance Ascaris attacks become birds blood body Bothriocephalus Caligi carapace cavity cercaria cercariæ cestode cetacea ciliated cirrhipedes coast colour completely crab creatures crustaceans curious cysticerci cysticercus damp earth decapod distome echinoderm eggs embryos enclosed encysted female fish fleas gasteropod genus gives lodging harbours hatched hermaphrodite hooks host hymenoptera ichneumons infested inhabit insects intestines introduced isopod kind known larva larvæ leeches Leuckart live male manner messmates microscopic midst molluscs Mons mother mouth Müller natural naturalists neighbour nematode nourishment observed organs pagurus pass peculiar peritoneum pinnotheres plants polyps present prey produce Prof Professor Semper progeny remarkable resemble scolex seek sexes sexual sheep shell shelter side skin sometimes species sponge stomach Strongylus sucker tænia tæniæ Tania tape-worm trematode trichinæ 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