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

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                                The Development of 
the Cysticercus cellulosae.
The earliest indication of this species 
of Cysticercus, which admits of certain 
recognition as a form of cystic entozoon, 
is the presence of a selection of uniform 
corpuscles of about 1/2666th of an inch in length 
& 1/8000th in brea[d]th, mixed with very minute 
highly refractive molecules of different sizes 
in the substance of a primary fasciculus 
of a muscular fibre, or between its sarco
lemma & the sarcous elements.
See Plate 2, fig: 1.
Though such a collection of corpuscles 
has a moderately definite shape m being 
somewhat fasiform, yet it has not a com-
plete investment. It soon however acquires 
a very distinct membranous covering which 
is first apparent about its middle, & 
afterwards at its extremities. Its di=
mensions in this stage of its formation 
may be about 1/150 of an inch in length 
& 1/1500 in breadth, but these  are by no means regular. The external investment 
at first appears only as a bright line of 
homogeneous substance best defined 
on the side next the sarcous matter. It 
soon however increases in thickness, & 
afterwards becomes converted into short 
fibres which increase in size & 
distinctness as the animalcule grows 
larger. These fibres are peculiar, 
there 
                            
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Manuscript details

Author
George Rainey
Reference
PT/56/8
Series
PT
Date
1857
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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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