THE WHOLE BLOOD TEST FOR PULLORUM DISEASE 



Figure 4. Same Apparatus as in Figure 3 with the Test Plate Holder Removed. 

 The thermostat and frosted glass plate which rests on shoulders are exposed. The frosted glass 

 plate permits uniform heat distribution. 



Figure 5. Same Apparatus as in Figure 4 with the Frosted Glass Plate Removed, 

 Exposing the Two Dark Heat Bulbs and the White Light Bulb. 



