. A text-book of agricultural zoology. Zoology, Agricultural; Zoology, Economic. 54 VARIOUS FORMS OF TAPEWORMS. produce hundreds of scolices, future tapeworms, should a dog devour the organs suffering from this echinococcosis. Lastly, there is a form of Echinoooccus known as a multi- locular form, in which the vesicles remain very small, whereas in the others they may assume an immense size. These vesicles remain attached together, and may produce a huge mass eight or nine inches across, united to- gether hy connective tis- sue. These are called col- loid cancers, but Virchow showed some time
. A text-book of agricultural zoology. Zoology, Agricultural; Zoology, Economic. 54 VARIOUS FORMS OF TAPEWORMS. produce hundreds of scolices, future tapeworms, should a dog devour the organs suffering from this echinococcosis. Lastly, there is a form of Echinoooccus known as a multi- locular form, in which the vesicles remain very small, whereas in the others they may assume an immense size. These vesicles remain attached together, and may produce a huge mass eight or nine inches across, united to- gether hy connective tis- sue. These are called col- loid cancers, but Virchow showed some time ago their true formation. The secondary internal vesicular formation is chiefly found in man, the pig, and the horse, where huge hydatids are pro- duced. Secondary exter- nal vesicles are more gen- eral in ruminants, hut they also occur in the pig and in man. This disease is found wherever dogs exist. One-sixth of the popula- tion in Iceland have suf- ered from this plague.' It is also abundant in Australia,'^ India, and else- It is by no means uncommon in Great Pio. SEBRATA (cat, slze). (From Far. Dis. Ani., Neumann.) where. ' Dobell, Report on Iceland. (1879.) ^ Thomas, Hydatid Disease in Australia. Adelaide (1884). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and Sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
