On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey

looking portion, which was so coiled up within the oval cyst as to form a spiral of about a turn & a half, will be made to protrude, & then the animal will present a form which will admit of an anatomi cal division into two parts; namely, a ventral portion & a neck, which is the usual mode of dividing this entozoon. See Plate 1. fig: 1. The ventral part is in the form of an oval cyst about 1/2 of an inch in its long diameter. It is composed of an ex tremely thin membrane rendered uneven on its external surface by minute rounded projections, & its internal presents a granular appearance, as if covered with coarsely pounded glass. It is furnished with no visible external opening, & is of the same structure every where, excepting where it is connected with the neck. Its cavity contains fluid in which there is amorphous granular matter, & some highly refractive particles having an oily aspect, also occasionally minute earthy particles which effervesce in acid. No fibres of any kind can be distinguished in this membrane either in its natural state or when acted upon by acetic acid. As this part of the Cysticercus is formed first & exists as a perfect mem branous sac some time prior to the devel opment & addition of the neck, there can be but little doubt, this is the part in the perfect animalcule, in which the function
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Manuscript details
- Author
- George Rainey
- Reference
- PT/56/8
- Series
- PT
- Date
- 1857
- IIIF
-
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Cite as
On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey, 1857. From The Royal Society, PT/56/8
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