POULTRY DISEASES AND THEIR TREATMENT. 



3 



Fig. 47. Trachea (windpipe) of Fig. 48. A pair of 



a plieasant sliowing gape Syngainus trachc- 



worms (Syngainus tniclicalis) alis. attached, 



attached to the mucous uiem- (After ]\Iegnin). 

 brane. (After ]\Iegnin). 



The two .sexes are joined together in such a way that a pair 

 looks Hke a double headed worm. The female is about jA inch 

 long and the male about 1-5 inch. The worms are pale in color 

 when empty but when the)- have been feeding they are red with 

 tlie blood of the chick. The presence of the worms in the tra- 

 chea of a living chick may be demonstrated by passing a gape 

 worm extractor (a loop of horse hair or fine wire or a feather 

 with the vane removed except at the tip) carefully down, the 

 trachea for some distance turning it around to loosen the wonns 

 and drawing it out. If the worms are present some will be 

 removed with the extractor. 



