116 



b'ig. 1 



-Teat dilator closed and open; used in dilating a narrow 

 or contracted milk duct. 





X3 



a> 



o 



01 



o 



bo 

 a 



"a 



m 

 a 

 o 



o 



-4-> 



73 



> 



o 

 p 



'. \^ 



V 



iC 





,i£i:^ 



