17 



The spines of the sand-bur {Cenchrus tribuloides L.) and the bristles 

 of the foxtail grasses and millets (Setaria sp.) are also of an injurious 

 nature. 



The sharply-pointed and awned seeds of squirrel-tail grass or wild 

 barley {Hordeum juhatum L.) cause inflammation and ulcerating sores in 

 the mouths of horses and cattle. A case was mentioned by Hadwen of 

 two bloodhounds who suffered severely with ulcerated sores and swelUngs 

 in the throat caused by getting these seeds in the mouth. 



Wild oats (Avena fatua L.) possess similar barbed and awned seeds, 

 which become embedded between the teeth of animals, and cause inflam- 

 mation. 



