. Texte livre de zoologie. Zoologie. La classe 3. /Qrega rmida. 97. Fig. 56. /CocciMv m oviforme, A-B, C-D enkystés formation d'sporea suspenseur et jeune.- Après Leuckart. L'alimentation, la paroi du kyste se dissout et le jeune semble errer thi'ough les conduits biliaires dans le foie et il se développer en Ooccidia. 3. Intégré dans la trans- verset fibres musculaires de nombreux mammifères, par exemple, très souvent dans le cochon, il se produit des petits corps, le soi-disant Rainey's ou de Miescher (Sarcocystis). Ils sont cylin- di-ioal ou corps fusiforme, variant en longueur (jusqu'à plusieurs m/m.), chacune dans un seul

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. Text book of zoology. Zoology. Class 3. Qrega/rmida. 97. Fig. 56. CocciMv/m oviforme, A—B encysted, C—D formation of sporea and falciform young.— After Leuckart. food, the cyst wall apparently dissolves and the young wander thi'ough the bile ducts into the liver and there develop into Ooccidia. 3. Embedded in the trans- verse muscle fibres of many Mammalia, e.g., very frequently in the Pig, there occur small bodies, the so-called Rainey's or Miescher's corpuscles (Sarcocystis). They are cylin- di-ioal or spindle-shaped bodies, varying in length (up to several m/m.), each enclosed in a single musclefibre. Eachissurrounded by a coat, and consists of a protoplasmic mass containing a large number of small falciform young; the latter are arranged in groups, each suiTOunded by a thin mem.- j 2 brane. Rainey's sacs are now usually regarded as organisms allied to the Gregarines; the grotips of falciform young are considered com.parable to the spores of a Gregariue. If this comparison prove correct it would stUl be a peculiarity of these organisms that the formation of the spores and falci- form young begins very early, before the growth of the sac is complete (the falciform young occurring even in very small fornas), and goes on quite gradually, so that fresh portions of protoplasm are constantly formuig spores and falciform yoiuig. The method of infection is unknown: they do not usually appear to be very in- „.-„, _.. . J J i.1 1. J. -L ^'S'- °'- 1 Jsaineyian sac m a muscle jurious; and so far they have not been fib^e, 2 the tip of one highly magnified, 3 found in Man. various falciform young.—After Leuckart.. 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 work.. Boas, J. E. V. (Johan Erik Vesti), 1855-1935; Boas, J. E. V. (Johan Erik Vesti), 1855-1935. Lehrbuch der Zoologie. London, Sampson Low

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