POULTRY DISLASLS AND THe;iR TR^ATMLNT. 165 



Veranderungen des Eies und Eileiters bei den Vogeln. Berlin, 

 1907). When yolks become very large in this way they may 

 break loose from the ovary without any rupture of the follicle 

 wall along the stigma but a breaking or tearing loose of the 

 stalk or pedicle of the follicle. 



Failure of Follicle Wall to Rupture. 



Closely connected with the last diseased condition is one dis- 

 cussed by von Durski in which the follicle wall fails to rupture 

 and release the yolk. In consequence of this, in the case de- 

 scribed by von Durski, the follicle wall became stretched and 

 pulled out into a long and very much twisted stalk. This stalk 

 held the hard, and decayed yolk fast to the ovary. In cases of 

 this kind the stalk sometimes breaks, and the yolk enclosed in 

 the follicle and with the end of the stalk attached, passes down 

 the oviduct acquiring albumen, membranes and shell. In still 

 other instances the stalk breaks and the follicle and contained 

 yolk drops into the abdominal cavity. 



DISEASES OE THE OVIDUCT. 



Diseases of the oviduct are relatively common and cause a 

 steady, and probably in the aggregate rather large loss to the 

 poultryman. Fortunately some of the diseases of. the oviduct 

 are more amenable to treatment than are those of the ovary. 

 Further these diseases in many cases show plain external symp- 

 toms at a relatively early stage. Then they may be recognized 

 and treated while it is still possible to effect a cure. This is 

 usually not the case with ovarian diseases. 



The general external symptoms of the commoner diseases of 

 the oviduct are very much like those of constipation. The poul- 

 tryman watching his birds is indeed rather likely to confuse the 

 two. But if so no harm is done. The thorough cleaning out 

 of the alimentary tract, and stimulation of the liver indicated 

 in the treatment of constipation is the very best thing to be 

 done in cases of inflammation and similar disorders of the ovi- 

 duct. 



Inflammation of Oviduct. 



This is one of the most important and common diseases of the 

 oviduct. It may occur alone or in association with other mor- 

 bid conditions of this or^an. 



