SYMPTOMS AND LESIONS 41 



bladder and larynx, in the pericardium, epicar- 

 dium, and on the auricles of the heart, especially 

 the left. Exceptionally they are seen in the dia- 

 phragm, in the parietal pleura and peritoneum, 

 and subjacent connective tissue. In the lungs, the 

 hemorrhages usually appear beneath the pleura 

 as ecchymoses, more often in the ventral portions 

 of the cephalic and cardiac lobes, but at other 

 times unconfined to particular areas. In the 

 spleen they appear as well-defined slightly raised 

 black areas % to 1% centimeters in diameter, 

 practically always at the edge of the organ and 

 visible beneath its capsule from the dorsal aspect. 

 Some of the lymph glands are practically always 

 congested or hemorrhagic. The hemorrhage ap- 

 pears first around the periphery as the sectioned 

 surface will show, later extending to the trabec- 

 ulae, and finally in some cases progressing so far 

 that the entire structure becomes infiltrated, show- 

 ing on section a uniform dark color. Petechiae 

 and ecchymoses in the lymph glands are excep- 

 tional. The nodes most regularly involved in- 

 clude the gastric, hepatic, lumbar, superficial in- 

 guinal, mediastinal and submaxillary. 



The hemorrhages which are found in and be- 

 neath the alimentary mucosa may appear in the 

 form of petechiae or ecchymoses, but there is a 

 marked tendency, due probably to constant me- 

 chanical irritation, for them to become more 



