620 THE DISEASES OF THE HORSE 



the true digestive portion of this organ, but sometimes in the duodenum or 

 jejunum in small numbers. A group of these larva>, which ai'e populai'ly 

 called bots, arc here represented, but sometimes nearly all the cardiac ex- 

 tremity of the stomach is occupied with them, and upon the interstices are 

 found little projections which are caused by those that have let go their hold, 

 and have been expelled with the food. Several of these papillte are shown 

 on the engraving, which delineates also the appearance of the bots them- 

 selves, so that no one can fail to recognize them when he sees them. 

 Another variety, known as fundament bots, are observed to attach them- 

 selves to the inside of the rectum, where they cause a good deal of irritation. 

 The fly watches its opportunity to deposit the ova while the animal is in 

 the act of defiecation. 



Stomach bots appear to do no harm in moderate numbers, but they 

 undoubtedly rob their host of a good deal of food. 



Treatment. — Destroy the eggs with pai-affin or mercurial ointment rubbed 

 upon the hairs where they are deposited about the knees and shoulders by 

 the bot %, and the fundament bots by inunction of the rectum with the 

 ointment. The latter may be picked off with the fingers by the groom if 

 he watches his opportunities. 



