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

                                there; there is nothing that I am acquaint=
ed with analogous to them. They have 
not the sharp, & well defined outline of 
true cilia, nor are they pointed like 
setae, or curled like cirri. They have 
somewhat the nature of white fibrous 
tissue, their distinctness being imposed 
by acetic acid. They are of different 
lengths in the same entozoon, & general=
ly longer, though not thicker in the large, 
than in the small ones. Their length 
averages about 1/2100 of an inch. 
The most remarkable circumstance con=
nected with them is the great uniformity 
of their arrangement in different cysti=
cerci. See Plate 2. fig: 2 & 3. They 
cover the whole of the outer surface of the 
investing membrane, & on opposite sides 
of the same entozoon, their form, size, 
& direction are similar, so that the 
two halves taken longitudinally are in 
this respect symmetrical. If the 
direction of these fibres be examined 
about midway between the two extremi=
ties of one of these animalcules they 
will be seen to project from the surface 
at right angles with the axis of its 
body: but if traced each way from this 
point they will be observed gradually to 
incline to this axis at an angle which 
keeps diminishing as they approach the 
two extremities, so that the fibres nearest 
to the two ends almost coincide in their 
direction with that of the axis, & thus 
correspond