DISEASES OF SHEEP 625 



Peritoneum: Itis; effusion. 



Tissues were preserved from all post-mortems; sectioned and 

 studied for the determination of the pathological changes resulting 

 from Aster poisoning. The definite facts obtained from their study 

 will be incorporated in the results obtained from a continuance of 

 the work. 



SUMMARY. 



1. The Woody Aster has been proven to be poisonous to sheep. 



2. The Woody Aster grows only on alkalied gumbo-clay soils, 

 and but for the one recorded season, is always heavily infested with 

 the fungus, Puccinia xylorrhizae. The presence of the fungus may 

 add to the poisonous character of the plant. 



3. Ninety to one hundred per cent of the animals affected die. 



4. Aster poisoning is characterized by lassitude, difficult respira- 

 tion, muscular weakness, bloat, and final prostration. 



5. Duration of illness, from a few hours to several days. 



6. Anatomical Diagnosis. Gastro-enteritis due to fermentation 

 of ingesta acting as an irritant. General passive congestion due to 

 weak and impeded heart action ; and, in part perhaps, by reason of 

 diaphragmatic pressure on lungs produced by tympany. Albumi- 

 noid degeneration of liver and kidney due to precipitation of pro- 

 teids by toxin or toxins. 



7. Treatment. Purely symptomatic and none uniformly suc- 

 cessful. Administration of stimulants in small doses as tr. opii., alco- 

 hol, and ether; carminatives, gentian, nux vomica, and ginger; anti- 

 ferments, eucamphol. 



8. Prevention. Avoid Aster patches. 



LIST OF PUBLICATIONS CONSULTED AND ABRIDGED ABOVE. 



The Nodular Diseases of the Intestines of Sheep : Iowa Agr. Exp. 

 Sta. Bui. 35; La. Agr. Exp. Sta. Bui. 64, 79, 83 and 89. 



Gid or Grub in the Head of Sheep: Iowa Agr. Exp. Sta. Bui. 

 35; Bu. of An. Ind., Dept, of Agr., Bui. 66 and 125; Bu. of An. 

 Ind., Dept. of Agr. Cirs. 159 and 165; Va. Agr. Exp. Sta, Bui. 110. 



Scab in Sheep : Va. Agr. Exp. Sta. Bui. 124 ; Wyo. Agr. Exp. 

 Sta. 12th An. Kept. ; S. Dak. Agr. Exp. Sta. Bui. 36 and 107 ; N. 

 Dak. Agr. Exp. Sta. Bui. 61; Ky. Agr. Exp. Sta. Bui. 143 and 

 157; La. Agr. Exp. Sta. Bui. 132; Iowa Agr. Exp. Sta. Bui. 35; 

 Col. Agr. Exp. Sta. Bui. 38; Ind. Agr. Exp. Sta. Bui. 80; Minn. 

 Agr. Exp. Sta. Bui. 16 ; Farmers' Bui., Dept. of Agr. 159 ; Bu. An. 

 Ind., Dept. Agr. Cir. 89. 



Ticks Affecting Sheep: Va. Agr. Exp. Sta. Bui. Ill; Iowa 

 Agr. Exp. Sta. Bui. 35. 



Lice Affecting Sheep: Iowa Agr. Exp. Sta. Bui. 16 and 35; 

 Va. Agr. Exp. Sta. Bui. 112. 



Fringed Tapeworm: Kan. Agr. Exp. Sta. Bui. 86; S. Dak. 

 Agr. Exp. Sta. Bui. 78. 



Lung Worms in Sheep: Iowa Agr. Exp. Sta. Bui. 35. 



Common Parasites of the Domestic Animals: Okl. Agr. Exp. 

 Sta. Bui. 53. 



