58 



worm eggs in Iheui in;iy bo killed. This can be done 

 by disinfecting tliem with a strong solution of carbolic 

 ucid, quicklime, or as Dr. Stiles suggests, by keeping 

 them in a dry place for several months or through the 

 winter, for it is probable that they can not withstand 

 this treatment. 



If fowls are raised on fresh uncontaminated land 

 there is but little danger that they will become in- 

 fected. 



Dr. V. A. Moore, of the Bureau of Animal Industry, 

 lias recently called attention to a peculiar disease of 

 chickens that is characterized by the development of 

 small nodules in the walls of the intestine. These 

 nodules ^\ere about a sixth of an inch in diameter and 

 quite hard. AVhen opened it is found that the larger 

 ones contain greenish pus. Tliese nodules were pro- 

 duced by a small t?peworm recognized as Davaince tet- 

 ragona. Tliis dis &se has been recognized in fowls 

 from the District >f Columbia, North Carolina and 

 Virginia but has nut as yet been discovered among the 

 poultry of Pennsylvania. It is quite destructive. 



2. SUCKING WORAIS— TREMATODES. 



These woims are of an oval shape, have rather 

 phnnp bodies and are provided on their ventral sur 

 faces with suckers by means of which they attach 

 themselves to the part they are in contact with. 



Tliere arc several species that infest the domestic 

 fowl but it is not known that any of them are very prev- 

 alent c>r very destructive in this country. Their mode 

 of development is similar to that of tapeworms; thai 

 is, it is necessary for the embryo to pass through an 



