ILLUSTRATIONS 



[Plates loaned by the Bureau of Agriculture.] 



Plate I 



Fig. 1. Cow 3929 leaning against the stall, with legs spread to keep her 

 from falling. Last stages of questionable anaplasmosis. 



2. Cow 3929 in a semicomatose condition, respiration sonorous, pulse 



wiry, body covered with flies, legs spread to keep her from falling. 

 Last stages of questionable anaplasmosis. 



3. Cow 3929 just before being slaughtered, body covered with flies, 



legs spread, oedema under jaw and throat. Animal had a sub- 

 normal temperature. Last stages of questionable anaplasmosis. 



Plate II 



Fig. 1. Two red blood cells containing anaplasmalike bodies: (a') marginale 

 type (Theiler) ; (6') centrale type (Theiler). Notice the halos 

 around the bodies. 



2. Two red blood cells containing anaplasmalike bodies : (a') marginale 



type (Theiler), protruding slightly beyond the periphery of the 

 cell; (6') two bodies apparently shortly after division, one remain- 

 ing on the margin and the other migrating across the cell. 



3. A red blood cell containing a body which has almost completed 



division. Notice the halo around the bodies. 



Plate III 



Fig. 1. Two red blood cells containing anaplasmalike bodies: (A) contain- 

 ing two bodies undergoing division; (a') body becoming oval 

 before division takes place; (a'') one body much larger than 

 the other, division almost complete, giving the appearance of 

 budding; (B) two bodies in a cell, both remaining at the margin. 



2. A red blood cell containing three anaplasmalike bodies of varying 



size, giving the extremes in size ordinarily noticed. 



3. A red blood cell containing four anaplasmalike bodies, two showing 



unequal division, and two showing equal division. 



TEXT FIGURE 



Fig. 1. Temperature chart of cow 3929. 



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