

^i*w«;if^"''^^i;^pft^BB^ 



• ~ ^ #■ T.ir-^'*'' 



Fig. 5. Diffuse infiltration of mucoid substances in all the dif- 

 ferent layers of the vessel wall, with degeneration of the media 

 (Phoenicopterus). 



Fig. 6. xVorta of the red-breasted goose with degeneration of 



all the different layers of the vessel wall and a splitting off of the 



elastic membranes in the media {Branta ruficollis Pall.). 



