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

                                the muscle be put into water for a short 
time, the cysts will become re-distended, & 
rendered as apparent as before. As often as these cysts lose their fluid by exposure, 
they can be re-distended by a fresh appli 
cation of moisture even after they have 
been deprived of life, shewing that this 
property of imbibition of fluid is obviously 
due to physical causes. These entozoa 
vary very much in size according to their 
various stages of development, but the 
relative dimensions of the white opaque 
portion, & the transparent sac differ most in those individuals which may 
be considered to have attained the adult 
state. Wherever they occur, they are 
contained in sacs formed by the condensa 
tion of the surrounding tissues, whose 
strength & completeness vary in proportion 
to the closeness of the muscular fibres 
between which the cysts are found; hence 
in the substance of the muscular walls of 
the ventricles of the heart, these adventitious 
sacs are strong & well defined, whilst they are 
thin & sometimes indistinct where the mus 
cular fibres are less closely connected 
together; or when the cysticerci are situated 
between a muscle & its fascia, however 
in all situations they can be easily dis 
tinguished by the microscope from the 
true cyst of the animalcule, their structure 
being very dissimiliar. 
If the adult Cysticercus be subjected 
to slight pressure the opaque globular-
looking