374 The Farmer's Veterinary Adviser. 



TICKS. IXODES. 



These are common on stock in some parts of the coun- 

 try and may be picked off or dressings applied as for 

 acari. 



LAEVA OF GADFLY. WABBLES. 



These may be found in little rounded tumors the size 

 of hazel-nuts, on the backs of cattle in winter and spring, 

 each tumor having a hole in the centre through which the 

 grub may be seen or extracted. A second species attacks 

 sheep as well as cattle, while a number of others in dif- 

 ferent countries, but especially in the tropics, live in the 

 skin of man and a variety of animals. Where gadflies 



Eig. 53. Fig. 54. 



Fig. S3 — CEstrus Bovis. 



Gadfly of ox.— CI-ARK. Fig. 54 — Larva of same. Warble. 



abound, animals are greatly terrified and injured by their 

 attacks. The best treatTnent is to examine all cattle in 

 spring and squeeze out and destroy the grubs found in 

 their backs, enlarging the openings with a knife when 

 necessary. This cuts off the supply of flies for the comiD g 

 j-ear and a universal practice of this might be expected to 

 kill them out. 



ATTACKS OF FLIES (dIPTERA). MAGGOTS. 



The attacks of flies are often very troublesome and even 

 fatal to stock. Many agents such as oil, infusions of wal- 

 nut leaves, rue or wormwood, are used to drive them off 

 but with only partial success. To protect the heads of 

 sheep a mixture of camphor, turpentine and aaafoetida is 

 very effectual. 



