STRONGYLIDiE OK PALISADE-WORMS. 



73 



free in the intestinal contents, where they breed, the ova 

 coming away in the horse's excreta. The red species is by 



Fig. 25. — Sclerostomum tktracanthum. 

 Male (six times nat. size), and enlarged anterior extremity. 



far the most abundant. They are mainly observed in young 

 horses. From investigations during the last few years, it 



Pig. 26. — Small Red Sclerustome (S. riibrum) from Horse (female). 



seems that these pests are much on the increase. Fortunately 

 they can be soon checked by the administration of Thymol 

 as a nematocide.-^ 



^ Journal of the S.-E. Agric. Coll., jjart 6 — "An Epizooty produced by 

 species of Sclcrostor/iuvi in Arab Horses," by F. V. T. 



