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44 TEXAS NATURE OBSERVATIONS AND REMINISCENCES.
the entire ease, as above described this is such an interesting study,
is unique, and the parasites, found even were there found no parasiare
some uncatalogued sarcoptes tic vestages.
species-in my own humble opin
Referring to the microscopic
ion at least. The cuticular scrap
illustrations herein, the photomiings,
as stated, contained a vast crograph, Fig. 1, shows how
variety of superficial cuticular ab
immensely this parasite is magnirasions
and deeper-seated pro
fied
compared to the smallest
ducts, especially of the follicular hardly visible dot in Fig, 3,
system of the derma, and among and it shows the bold outlines of
these were remnants of the para
the legs, body and headparts
sites, some seemingly incrusted plainly. Fig. 2, represents the
and surrounded by a calcareous cast off remnants of the larval
encasing. state of this mite. Fig. 4,
The sarcoptes species in differ
shows the general appearance of
ent animals differ from the one the raw cuticular material sent for
under consideration in many re
examination; and the large dot in
spects, and it is for this reason, Fig. 3 shows the average size of
and in particular, also, as the parasites,
larva and remnants of same the globular bodies expelled, some
etc., were found in scrapings re
of which revealed the encased larmoved
from the body of man, that val parasite.
Some Observations on the Echinococcus Disease
(Bladder Tape Worm.)
Of the Texas Jackrabbit in Particular.
The near relationship of the species of tape-worm-the taenia
echinococcus parasite of man to mediocanellata, taenia solium and
the same parasite disease in ani
bothriocephalus latus-there ocmal,
and the question often asked curs in this climate a very minute
of the writer whether this disease and but little known taenia, the
was the cause of the widespread embryonic or larval state of the
and common tapeworm pest, in
bladder tape-worm, which, in aniduced
me to investigate this inter
mal, infests with narticular prefesting
matter thoroughly in the erence the prairie rabbit; and to
following paper published some hunters it is well known that
years ago in a medical journal. among the rabbits it is nearly exThere
is no doubt to me, as to oth
elusively the large so-called jackers
who have given the matter a rabbit which is often infested with
close consideration, that there oc
peculiar tumor-like protuberances
cur cystic tumors in man which or cysts in different parts of its
are really echinococi in advanved body, and that, especially during
and degenerated state, but were a protracted drr, season, a perfect
overlooked as such for want of a epidemic of the disease exists
microscopic examination. My pa
among the large prairie rabbits,
per, therefore, and the photo-mi
and that the small bush rabbit is
crographs of the echinococcus par
nearly exempt from the disease.
asites, which I prepared from mi
In consulting a number of
croscopic testings, I hope, will be works, medical as well as veterinwelcomed
in throwing a little ary, I find no mention of the echimore
light on the matter. Besides nococcus disease among the rabthe
more common and well-known bits. It is a noticable fact that,
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Menger, Rudolph. Texas Nature Observations and Reminiscences, book, 1913; San Antonio, Tex.. (https://texashistory.unt.edu/ark:/67531/metapth14396/m1/44/?q=menger: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Special Collections.