BY T. HARVEY JOHNSTON AND M. J. BANCROFT. 251 



On 24/6/16 Ave found many small and a few engorged 

 ticks, as well as numerous small tick sores resembling 

 pinpricks. With the latter were associated ticks and a 

 fhiid resembling '' exudate." 



This cow was examined regularly t-n-ice daily from 

 January 17th-February 11th (except on January 22nd 

 and February 2nd), 1918. One fully-developed female 

 tick was removed on each of the following dates : January 

 17th, Feb. 5th and 6th : larvae, nymphs, males and a few 

 unbloated females Were observed on almost all occasions. 

 Fresh exudate was seen on January 17th, 18th, 20th, 24th, 

 February 1st, 3rd, 5th, 8th, and 9th. From March 18th- 

 24th, Fairy was examined four times. Numerous males 

 and nymphs as well as a few unbloated females, were 

 noticed on the escutcheon while six matured but ver}^ small 

 females were removed. Exudate had been breaking out 

 all over escutcheon which was encrusted with thick yellow 

 scales and hard black scabs. Calved April 1918. On 

 June 7th she was again examined ; males were numerous 

 and a few fully-deVeloped female ticks were removed. It 

 was noteworthy that the escutcheon was free from scabs 

 and ticks. 



Greedy, born March, 1914 ; dam, Ladybird. Roan 

 cow with yellow skin. (Tick infested, March, 1916 ; clean, 

 shewing exudate, November, 1916. Stock book). 



Clean, -with a few typical exuding areas (24/6/16). 

 Examined in paddock on six occasions from January 16th 

 — February 11th, 1918. — Males and nymphs present but 

 no mature females were observed. Fresh exudate was seen 

 on January 16th and Februarj^ 9th. March, 1918, very 

 clean. Calved May, 1918. June 7th, much tickler than on 

 previous examination, males and immature ticks numerous, 

 few mature females. No trace of exudate. 



Jockey, born 1915 ; dam, Old Spot. A red cow with 

 yellow skin. 



When 18 months old (24/6/16) she was examined and 

 found to be clean except for the presence of some nymphs 

 on the esciitcheon. 



This cow was running out in the paddocks and was 

 examined on seven occasions between January 16th- 



