154 Veterinary Obste tries 



6. Occlusion of the Os Uteri. 



7. Atony and Dilation of the Cervix Uteri. 



8. L0.S.S of Cotyledon.s. 



9. Vaginitis. 



10. Persistent Hymen. 



11. \'ulvo- Vaginal Adhesions, and Constrictions. 



12. Horizontal Vulvar Opening. 



13. Rupture of the Perinaeuni and Recto-vaginal Fistula. 



III. Impediments to Copul.vtiox and Fecuxdatiox refer- 



AHLE TO Nervous Disorders. 



1. Excitability. 



2. \'aginismus. 



3. Violent Expulsive Efforts following Coitus. 



IV. Extreme Variatioxs ix vSize of Male axd Female. 



V. IxFECTious Diseases. 



