Investigations into the Nature, Causation, and Prevention of Texas or Southern Cattle Fever Page: 3
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TABLE OF CONTENTS.
Page.
Letter of transmittal.................................... ................... 7
Letter of submittal ....... ........................ ............ -....... ...... 9
Historical review ........................................................... 11
The nature of Texas cattle fever ............................................ 15
Period of incubation ..................------.................................----- 15
Symptoms ...-------.......------..-------- -..........................-------------.-------.......---........----------........ 15
Acute type -----.....---.........------- ----......---...........---.. ............---- --..... 15
Mild, non-fatal or chronic type ....................................------.. ---------22
The relation between the acute and the mild type of Texas fever-re-
lapses ...........----------..--------....................................-------------------------------.......---.... 23
Pathological changes .--........-----.--..........-----.....--.-----.---................----........----------- 25
Changes in the organs and tissues........ ........................... 25
Changes in the corpuscular elements of the blood .................... 35
The destruction of red blood corpuscles ................. ....... 36
The regeneration of red blood corpuscles ........................ 41
The causation or etiology of Texas fever..................................... 51
Texas fever is not caused by bacteria...... .............................. 51
The microorganism of Texas fever (Pyrosoma bigeminum n. sp.) ........... 55
Peculiar bodies found in the red blood corpuscles of healthy cattle... 56
The microorganism in the acute type of Texas fever ................ 58
The microorganism in the mild type of Texas fever--------------.................. ----65
The probable life history of the microSrganism in the body of cattle.. 68
The nature of the Texas-fever microSrganism and its relation to the
parasites of the red corpuscles of other animals and of man........ 71
Probable action of the microorganism in the body of susceptible
animals------.......-----................-----......------........ ..........-----------------............ 73
Outbreaks in which the Texas-fever parasite has been demonstrated. 76
The production of Texas fever in cattle by the inoculation of blood
from cases of this disease .......................................... 77
The inoculation of animals other than cattle with Texas fever blood.. 82
The transmission of Texas fever by means of the cattle tick, Bodphilus bovis
(Riley) Curtice .--------------..............----...-------------.................. --------------..........--..----------........ 85
The cattle tick (Boophilus bovis) .......-----------............----.............-------...-------...... 86
Field experiments to determine the precise relation between the cattle
tick and Texas fever ....----------------................----..........---------------------................. 92
Experiments of 1889 (first series)..---- ................ ........-------------- --...... 93
Experiments of 1889 (second series) ................................. 96
Experiments of 1890.........---........................................ 99
Experiments of 1891.---.. ---- ........................................... 107
Experiments of 1892 .-..--- -----...------..--..-----..---..--...--...----...............----- .--...--.. 110
Miscellaneous experiments .......................................... 112
General summary of the field experiments relating to the cattle tick.. 113
The relation of the cattle tick to the "period of incubation" of Texas
fever and to the infectiousness of Southern cattle---.....-- - ......---...--........- - - - 114
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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/m1/3/?q=%221863%22: 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.