The internal parasites of our domesticated animals : a manual of the Entozoa of the ox, sheep, dog, horse, pig, and cat / by T. Spencer Cobbold.

Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: The internal parasites of our domesticated animals : a manual of the Entozoa of the ox, sheep, dog, horse, pig, and cat / by T. Spencer Cobbold. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    from Blancliardj shows tlie cliaracter well (Fig. 4); and this lateral view of the parasite also permits us to recog- nise the oral sucker_, a, the large digestive tube of the right side, h; affording likewise a good general outline of the water-vascular system, whose ultimate ramifica- tions terminate in minute pouches. The development of the amphistomes is exceedingly Fig. 4. The Common Amphistome. interesting, not merely from a scientific point of view, but as throwing much light upon the general question of the origin and causation of fluke disease. A very closely- allied species of amphistome resides in the frog, and we have ascertained that its lal*v8e either take up their abode in, or dwell upon, the bodies of at least three different species of water snails. The larval trematode is well known to helminthologists under the title of Gercarea diplocotylea. It measures about the twelfth of an inch in length, and happens to be one of those cercarean forms which is furnished with eyes.