q8 veterinary obstetrics. 



be added sedatives or anodynes, as tincture of opium, 

 tincture or fluid extract of belladonna, or chloral hydrate. 

 To the constriction apply equal parts of solid extract, 

 of belladonna and vaseline. Internally administer 

 chloroform, tincture of opium, or chloral, and keep the 

 animal quiet as possible. These failing, try to dilate- 

 the OS by force, as by the introduction of the fingers, 

 which will sometimes bring about relaxation. 



Another method is by inserting a dry cone-shaped 

 sponge, and then wetting it ; as it increases in size, the 

 OS may dilate. 



Another is to insert a bladder into the opening of 

 the OS, and then distend it with hot water ; or, insert a 

 rubber bag, similar to a "Barnes' Dilator" (used in 

 human practice), and inflate it with air, or distend it 

 with hot water. 



Fig. 44. 

 Barnes' Uterine Dilator. 



Should all these methods fail, make an oblique or 

 lateral incision with a probe-pointed bistoury. Be 

 careful that the incision is' not made above or below, 

 on account of injuring the contiguous structures irt 

 those situations. 



