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

                                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