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

hooklets are about 1/150th of an inch in length, the shorter ones are a little less. Each con= sists of a curved part resembling a bird’s claw, & a straight part or handle; and at the junction of these two parts there are rounded processes, or tubercles, two in the short hooklets, & only one in the long ones, an anatomical mark by which the two kinds can be easily distinguished. See Plate 1: fig. 6 (b) & (c). They are composed of a very highly re fractive, dense & perfectly homogeneous substance possessed of a slight degree of elasticity & not acted upon by acetic acid. In the curved portion there is a cavity filled with a fibrous material, the other parts are perfectly solid. They are placed (see Plate 1, fig: 5.) like the radii of a circle with the extremities of their handles turned towards its centre, which corresponds to the centre of the quadrangu lar area in which they are situated, & their handles not meeting at this point circum scribe a small circular space which if perforated, would correspond to the mouth of the animalcule, but at this part there is no opening. The membrane is simply depressed so as to present a conical hollow. By pressure upon the neck this part can be made to protrude in the form of a tongue-like process. The handles of the hooklets are connected with this process so that when it moves they must move with it. (See Plate 1, fig: 7a). Besides
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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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