126 



THE MODERN IIORSE DOCTOR. 



Fig. I. 



6 p pm 



\ 3. mm 



mm 



Fig. 6. 



Fig. *, letter a. The eggs of the gadfly adhering to the hair of the horse. 



Fig. 2, letter 6. The eggs as seen through a magnifying glass. 



Fig. 3. A bot in the progressive stage of development. 



Fig. 4. A full-grown bot, detached. 



Fig. 5. The female gadfly. 



Fig. 6. Cut of the horse's stomach. 

 " " letter a. The gullet, or oesophagus, extending to the stomach; — 

 b, b, the margin which separates the cuticular from the villous coats of the 

 stomach : — c, the entrance of the gullet into the stomach ; — d, d, the cuticu- 

 lar portion of the stomach ; — e, the communication between the stomach and 

 first intestines ; — f, f, f, the villous or mucous portion of the stomach, in 

 which the food is principally digested. 



