The royal natural history . DEVELOPMENT OF Distommil LARVAL FORM OF LIVER-FLUKE (magnified). It escapes from the parent Redia by an aperture situated near the front end ofits body; and presents a considerable resemblance to a tadpole, consisting of a longvibratile tail, and a wide heart-shaped body with a forked intestine, two suckers, FLAT-WO RMS. 469 and a gland on each side of the intestine. These larva3 make their way out of thesnail, but instead of seeking a new host swim about for a time and ultimatelysettle upon some water-plant, or a blade of grass in a meadow. Here theyenc
The royal natural history . DEVELOPMENT OF Distommil LARVAL FORM OF LIVER-FLUKE (magnified). It escapes from the parent Redia by an aperture situated near the front end ofits body; and presents a considerable resemblance to a tadpole, consisting of a longvibratile tail, and a wide heart-shaped body with a forked intestine, two suckers, FLAT-WO RMS. 469 and a gland on each side of the intestine. These larva3 make their way out of thesnail, but instead of seeking a new host swim about for a time and ultimatelysettle upon some water-plant, or a blade of grass in a meadow. Here theyenclose themselves in a capsule, and await the chance of being devoured alongwith the grass by a sheep. From the stomach of the sheep they make theirway into the bile-ducts, and there develop into the mature stage. TURBELLARIAN WORMS —Order TURBELLARIA. Nearly all the worms of this group lead a free life, parasitism amongst thembeing the exception. They are found either on the land or in fresh or saltwater, and have received the name Turbellaria, or whirl-worms
Size: 1737px × 1439px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectzoology
