THE WHITE WORMS. 85 



camphor and chalk has a similar effect to that excellent 

 compound sold under the name of i Camlin Powder/ 

 which has met with general approval. 



This disease is one, fortunately, that lends itself to 

 treatment ; but it is well to take all steps to prevent 

 its spreading and appearance, which we are capable 

 of doing without any very serious expense. 



The White Worms (Heterakis) of the 

 Alimentary Canal. 



Amongst the numerous worms mentioned as occur- 

 ring in the alimentary canal of the Fowl, these are 

 by far the most important. There has often appeared 

 a kind of epizootic attack of so-called White Worms 

 in the Fowls' intestines. These White Worms have 

 more than once come under my notice. They belong 

 to the Nematode genus Heterakis, Four species of 

 this family will be found recorded in the Appendix 

 as living in the Fowl. Two only are ever very 

 abundant, namely, H. inflexa and H. papillosa. They 

 are dirty yellow to white in colour. //. inflexa is 

 only 8 cm. long in the male, and from 7 to 12 cm. in 

 the female. H. papillosa is very similar. 



As far back as 1789 we find records of the damage 

 caused by these worms in domestic birds. Blavette 

 and Rossignol made observations on this subject in 

 1840. They found that the death of fowls they 

 examined was due to the accumulation of these White 

 Worms in the intestines. As many as thirty were 

 found in each fowl that died. In the post-mortem 



