Protozoan Cattle Fever. Texas Fever. Paludism of Cattle. 59< 



through the stretched and attenuated capsule, and darker pete 

 chial spots are found at intervals. When cut into, the pulp aloni 

 appears dark, brownish red, grumous, and showing under thi 

 microscope many red blood cells, larger cells granular and under 

 going fatty degeneration, yellow flocculi, crystals of haematoidin 

 and granules of black pigment. It is the excess rather than thi 

 nature of these agents that is significant. The pulp may b 

 pressed or washed out, bringing the trabeculse and Malphigiai 

 bodies into view. 



The kidneys are most seriously affected in acute and rapidl] 

 fatal cases. There may be oedema, with blood staining and evei 

 extravasation on their lower surface and in the adipose tissue 

 The gland may be enlarged and the cortical substance congeste( 

 of a dark brownish red or black. Its capillaries are gorged wit! 

 red globules in which the piroplasmata are very numerous. Thi 

 medullary portion is much paler, and with fatty granules in th( 

 epithelium, and oil globules in the tubules. The renal pelvis ii 

 more or less petechiated and marked by extravasations. 



The bladder is marked by petechise and usually contains som( 

 quarts of urine more or less deeply stained with haemoglobin 

 The depth of color is in exact ratio with the extent and rapidit] 

 of the destruction of red globules, and of the elimination of thei: 

 coloring matter. When the destruction is proceeding rapidly th( 

 urine may be as dark as port wine ; when their disintegration hai 

 lessened it may be pale though the temperature is still high ( 105' 

 F) . In slight and tardy cases there is reason to believe that th( 

 redness of the urine may be omitted altogether as is the icteri( 

 discoloration of the mucosae, and hence cases seen in animals indi 

 genous to the protozoan fever districts, have been described as i 

 distinct disease. In these mild cases and advanced stages ther( 

 is usually a certain amount of albuminuria remaining. In thi 

 early stages the urine is strongly alkaline, effervesces with acids 

 and has a high specific gravity ( 1030- 1040) ; later when abstinence 

 and suspended digestion and assimilation cause the patient t( 

 subsist on its own tissues the reaction may become distintly acic 

 and the specific gravity reduced (1010-1020). It no longer effer 

 vesces. During convalescence while there is a great deficiency o: 

 red globules and other blood solids, the urine tends to become 

 pale and watery, of a low specific gravity, and lacking in even iti 

 normal pigments. 



