Investigations into the Nature, Causation, and Prevention of Texas or Southern Cattle Fever Page: 37
301 p. : ill. (some col.) ; 24 cm.View a full description of this book.
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'THE NATURE OF TEXAS CATTLE FEVER.
37
one collecting the blood, whose entire attention had to be given to this
work. If desired, a rectangular box or stall may be placed in each
field into which the animal may be led and secured. Or such a box
may be placed under cover and then rainy weather will not interfere
with the work.*
In collecting the blood the hair is clipped and shaved away over an
area 2 or 3 inches square on that region of the rump overlying the
flaring hip bones (ilium), where the animal is most accessible for this
work. The shaven skin is washed and rinsed with clear water and
dried with absorbent cotton. To make the incision a spring lancet is
used resembling those advertised and figured in most catalogues of
medical and veterinary instrument makers. The incision must pass
through the depth of the skin in order that a sufficient flow of blood be
secured. The depth to which the blade of the lancet penetrates may
be regulated by a screw in the forked guard attached to the lancet.
The lancet should be flamed in passing from one animal to another.
The soap and razor should not be used on sick and healthy alike, for,
although we have no positive evidence that the disease may be trans-
mitted, either by these things or even by the lancet, such transmission
is within the range of possibility.t
*Such a box is best constructed as follows: Place three pieces of 2 by 4 studding,
4 feet long, on the floor parallel to each other and 3 feet apart. Erect uprights
also of 2 by 4 studding, and 3 feet high, 15 inches from the ends of each horizontal
piece, and brace securely from the outside. Within this framework build, by board-
ing up on the inside, a rectangular box 6 feet long, 3 feet high, and 2 feet wide, open
at the top and one end. The front closed end of the box is hollowed out to a depth
of 7 to 8 inches to receive the neck of the animal in the standing position, so that
the head may extend over the end and be secured to a framework extending l1 feet
beyond the box and attached to the box 2 feet from the floor.
The whole framework must be very securely put together. The projection of the
studding at the base with the braces on the outside serves to strengthen the box
and to prevent its upsetting by the struggling of the animal. A bar can be slipped
in behind the animal to keep it from backing out, and a rope or strap over the
withers fastened to the sides of the box will prevent the animal rearing forward.
t We give a specimen page of the figures obtained from counting the blood cor-
puscles as described above.
No. 18 (healthy control. )-August 6, 1892, 10 a. m.: Temperature, 101.8; repiration,
64; pulse, 56; blood collected, 7.3 divisions.
(Toison's fluid was used in this estimation. It consists of distilled water 160 cc.,
neutral glycerine 30 cc. (at 30), sodium sulphate 8 grams, sodium chloride 1 gram,
methyl violet .025 grain. It stains the white corpuscles so that both red and white
may be counted in the same preparation.)
First row of squares:
8 12 9 13
13 11 10 14
12 13 13 10
14 19 8 13
12 7 10 10 463 x 100 x 4000 X 10
40X7.3 -6,342,465 red corpuscles.
61+62+50+60-233 40 X 7.3
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Smith, Theobold & Kilborne, Fred Lucius. Investigations into the Nature, Causation, and Prevention of Texas or Southern Cattle Fever, book, 1893; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth143538/m1/37/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting University of Texas Health Science Center Libraries.