226 



DISEASES OF SHEEP. 



Byinploms of itching or irritation appear. The sheep-grower should pay strict atten* 

 tion to the health of his animals, and such care and attention will be abundantly 

 repaid. 



Below we give the figures of the acari, that produce the scab as delineated by M. 

 Waltz:— 



* SS 05 f>6 



(Fig. 28), the female of 3G6 times the natural size, larger than the male, of an oval 

 form, and provided with eight ft-et, four before and four behind ; a the sucker ; bbbb 

 the four anterior feet, with their trumpct-iike appt-ndiccs; cc the two interior hind 

 feet; dd the two outward feet, the extremities of which are provided with some long 

 hairs, and on other parts of the legs are shorter hairs. To these hairs the young 

 ones adhere when they first escape from the pustule- e, the tail, containing the anus 

 and vulva, garnished by some small hairs. (Fig. 29). The male on its back, and 

 seen by the same magnifying power; a the sucker; bbbb the fore-legs, with their 

 trumpet like appendices, as seen in the female c c, the two hind legs, with the same 

 appendices and hairs ; d the rudiments of the abdominal feet ; e the tail. — S.] 



SECTION XIII. 



LICE, TICKS, AND FLIES. 



Sheep, and especiallj if they are neglected and poor, are often 

 sadly annoyed by these vermin. They frequently precede the scab : 

 the dreadful iiching -wl.ich they occasionally cause, prepares for or 

 produces the scab, or Ihey nultiply most rapidly when the skin is 

 fouled by the sca\>. The shtpp.]ouse is too well known to every 

 shepherd : it is of a \irowni^ oi reddish colour, with a flat body, and 

 three legs on either sioo: the^cr has a large round body, and small 



