BOTS. 



913 



In discussing the subject, White says: 



" They are generally attached to the cuticular or insensible coat 

 of the stomach; but sometimes clusters of them are found at the 

 pylorus, and even in the beginning of the first intestine named 

 duodenum. In one case they were so numerous in this last situa- 

 tion as to obstruct the passage completely, and cause the animal's 

 death." 



Feron, an old writer, says he has paid particular attention to 

 this subject, and 

 has found that 

 when in large 

 quantities, they are 

 very destructive to 

 horses; that he had 

 seen several horses 

 whose stomachs 

 had been pierced 

 quite through by 

 them, the bots mak- 

 ing their way into 

 the abdomen. 



James Clark, of 



FIG. 800. The gadfly, depositing eggs, with 



1. The female fly about to deposit an egg; 2. The egg 

 m&gni&e ^ 3. The bot; 4. The eggs magnified, attached 

 to a hair; 5. The newly hatched bot; 6. The bot full 

 S* 7 - The ^ad of a bot magnified; 8. The male fly; 

 9. The chrysalis. 



Edinburgh, an au- 

 . . . . 



thor of high stand- 



ing 1 , quoted in shoe- 



/* * 



ing, relates a case 



of a horse's stomach 

 being perforated 

 by bots. 



In Vol. II., page 73, "White's Farriery," Dr. White says: 



" I have seen several horses destroyed by these worms. In 

 some of them they caused inflammation of the lungs ; in one 

 phrenzy, or mad staggers; and in one horse, the pylorus was com- 

 pletely plugged up with them. There is a remarkable sympathy 

 or consent between the stomach and lungs, and it is owing to this 

 that they sometimes cause inflammation of the lungs. In the cases 

 which have occurred in my practice, the most remarkable circum- 

 stance was the great depression they occasioned." 



Symptoms. There is no way, so far as I know, and I have 

 consulted a great many veterinary surgeons on the subject, of de- 

 termining the symptoms of bots. A horse is taken sick, showing 



58 



