112 S. SCHEIDEGGER 



REFERENCES 



Beneke, R. (1931). Beitr. path. Anat., 87, 285. 



Fahr, H. O. (1935). Dissertation: Giessen. 



Fox, H. (1923). Disease in Captive Wild Mammals and Birds. Phil- 

 adelphia: Lippincott. 



Krause, C. (1939). Ergebn. allg. Path. path. Anat., 34, 226, 367. 



NiEBERLE, K. (1931). Verh. dtsch. path. Ges., 26, 239. 



NiEBERLE, K., and Cohrs, P. (1931). Lehrbuch der spez. path. Anatomie 

 der Haustiere. Jena: Fischer. 



Pallaske, G. (1930). Frankfurt. Z. Path., 40, 64. 



Scherer, H. J. (1944). Vergleichende Pathologic des Nervensystem der 

 Saugetiere. Liepzig : Georg Thicme. 



ScHOLZ, W. (1938). Z. ges. Neurol. Psychiat., 162, 694. 



ScHOLZ, W., and Nieto, D. (1938). Z. ges. Neurol. Psychiat., 162, 675. 



WoLKOFF, K. (1925). Virchows Arch. path. Anat., 256, 751. 



DISCUSSION 



Verzdr: Was there any difference in the diet of the birds which 

 had arteriosclerosis and those which had not ? Diet is important in 

 view of the present theories that arteriosclerosis is connected with 

 fatty acids. 



Scheidegger: All these birds are carnivores, and it seems to me that 

 this is one of the most important factors in arteriosclerotic disease. 

 The birds all came from the Basle Zoo, and this form of arterio- 

 sclerotic disease is seen especially in vultures, flamingoes, cranes and 

 so on. I have never seen severe forms of arteriosclerosis in other 

 birds than the kinds mentioned here. 



BourUere: Can it really be said that arteriosclerosis in birds is 

 always related to a carnivorous diet ? European flamingoes are 

 "mud-eaters", feeding mainly on small crustaceans and inverte- 

 brates, and these kinds of food should contain a lot of unsaturated 

 fatty acids. Geese also feed as much on plants as on invertebrates. 

 In some zoos flamingoes may receive a different diet than they do in 

 the wild. 



Scheidegger: In Basle Zoo the flamingoes ate crustaceans and so 

 on, and they also received small pieces of meat in this food. I do not 

 know about geese. 



Hinton: I know there are a lot of differences between arthropods 

 and the rest of the animal kingdom, but small crustaceans are bits 

 of meat, aren't they ? 



Rockstein: Arteriosclerosis has been observed in the common fowl, 

 of course, and it is primarily a herbivore, so I do not think one can 

 generalize so easily on this point. 



