Texas Nature Observations and Reminiscenses Page: 37
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TEXAS NATURE OBSERVATIONS AND REMINISCENCES. 37
ton. This was January 18, 1910,
and six days later, on examining
the ticks two of them had hatched
myriads of pinhead size eggs of
oval or rounded shape and red-
dish brown color and of uniform
size. These e,~- were conglomer-
ated together like a bunch of
grapes and hundreds of them were
hatched by a single tick in a few
hours and the photo-reproduction
of this tick seen herein, with
a portion of the myriads of tick
eggs it had deposited a short time
before, gives us an idea how im-
developing, and on February 20,
a few of the latter specimens were
again mounted on a slide glass,
and a microscopic photo plate
prepared. This view shows how
the eggs progressed developing in
the meantime, and how the cellu-
lar and other elements of the egg
contents developed into a separate
oval-shaped body-the future cat-
tle tick-these embryonic bodies,
of course, still being under de-
velopment, until the advancing
warmer weather was to eventually
develop all of the embryos into
TEXAS CATTI.E TICK, MAGNIFIED SEVERAL TIMES
AND EusC IT LAID IN CONFINEMENT.
miensel these ticks breed. The
tick, with its eggs on this view, is
magnified about five times, show-
ing the tick on its dorsal side,
with the surrounding glistening
Being now inore interested to
note the farther developmentt of
such eggs, nuImnbers of them were
mounted in an artificial blood
pre~ipration (boviniine) and gly-
corine a1d, thourhl o)bserve(d dur-
in' cold wealher we hal at the
time. the eggs slowly progressed
the mature insect.
These developing eggs show
how the outer egg-shell-its cal-
careous environments-has sel)ar-
ated from the inside delicate gg-
membranes, inside of which the
developing tick enibryo is snugly
When examined several days
after the first crop of eggs
is laid. the original fresh egg shell
assumes a darker color, nearly
black, from accumulated calcare-
ous and other matter, but later
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Menger, R. Texas Nature Observations and Reminiscenses, book, 1913; San Antonio, Texas. (texashistory.unt.edu/ark:/67531/metapth143558/m1/41/?q=menger: accessed June 28, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting University of Texas Health Science Center Libraries.