OUE DOMESTICATED ANIMALS. 33 



the earliest transformed sexually mature proglottides. 

 Notwithstanding the many figures that have from time 

 to time appeared, there is probably no representation of 

 the beef measle so excellent in all respects as the 

 enlarged one given in Dr. Hewlett's instructive report 

 already alluded to (p. 23). The original drawing was 

 made by Dr. Temperley Grey, and the accompanying 

 woodcut is a reduced copy of his figure. 



The measle is here magnified to nine diameters. By 



Fig. 9. Ox Measle, or Bladder Worm of Bee?. 



this figure it will especially be noticed that the transverse 

 rugce of the neck are continued below, so as to present a 

 series of more or less uniform circular folds extending in 

 parallel lines over the whole surface of the bladder-like 

 caudal vesicle. 



Some persons may think that I have been unneces- 

 sarily minute in the foregoing description of the beef 

 measle ; yet they will judge otherwise when I state 

 that no instance has yet been placed on record of its 



D 



