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Science, more precise and frank than the frankest of poets, tells us that oysters are afflicted with tapeworms, and to kill the germ of these indecent pests, enclose them in untimely tombs, which from the human standpoint are among the most lovely and precious of gems. The assertions of the scientific are often the reverse of poetical.
The immature and mature forms of tapeworms are parasites of vertebrate animals, but an invertebrate host is necessary for the completion of the life cycle of the fluke. The hog is the only specie of domestic animals that becomes a host for the thorn-headed worm. The round-worm is a very common parasite. There are many species belonging to this class.
Then, there are some gratuitous and unredeemed vulgarities; some images whose barbarity makes us shudder, of creeping ascarides and inexpugnable tapeworms. But it is the mere foppery of literature to suffer ourselves to be long detained by specks like these. The varieties of Burke's literary or rhetorical method are very striking.
The different species of poultry are hosts for many different species of round-worms, thorn-headed worms and tapeworms. Dr. Kaupp states that Acaris inflexa or large round-worm, Heterakis pipilosa or small round-worm, and the Spiroptera hamulosa or gizzard-worm are frequently found in fowls.
He was fond of inviting them to tea; and, though vowing they never got a look in with him at the cakes and muffins, for it was the fashion to believe that his corpulence pointed to a voracious appetite, and his voracious appetite to tapeworms, they accepted his invitations with real pleasure.
I call to mind an old gentleman who bequeathed to a distant relative the products of a lifetime of indiscrimate collecting; which products included an obsolete field gun, a stuffed camel, a collection of bottled tapeworms, a fire engine, a church pulpit and the internal fittings of a public-house bar. And other instances could be quoted.
This treatment should be repeated until the bird has been relieved. Name the different groups of internal parasites; give examples of each. What conditions favor liver rot? Give the life history of the liver fluke. Name three common tapeworms; give the life history of the beef and pork tapeworms. Name the common intestinal worms of horses and give the treatment.
The tapeworms, bladderworms, and flukes continued to be a stronghold of the advocates of Xenogenesis for a much longer period.
Not only have the history of the animal parasites, such as the tapeworms and the trichina, which infest men and animals, with deadly results, been cleared up by means of experimental investigations, and efficient modes of prevention deduced from the data so obtained; but the terrible agency of the parasitic fungi and of the infinitesimally minute microbes, which work far greater havoc among plants and animals, has been brought to light.
The common parasitic diseases of domestic animals are caused by the following groups of worms: Flukes or trematoides; tapeworms or Cestoides; thorn-headed worms or Acanthocephales; and round-worms or Nematoids. Flat worms, such as tapeworms and flukes, require secondary hosts.
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