456 Journal of the 1)epartment or Agriculture. — K^ov., 1922. 



It is on these lines lliat farmers and others interested in sheep 

 will be able to give much valuable assistance. Not only are observa- 

 tions on the presence of the fly needed, but also on its absence, as 

 it Avould seem that some parts are much more troubled than others. 



The more material there is available, the better will it be for 

 investigation work. Farmers are therefore asked to send as much as 

 they can, not only from various parts of the Union, but also at 

 different times throughout the year. Wool infested with mag'g'ots is 

 particulai'ly rec^uired. Pieces of infested wool should l)e clipped from 

 the shee]) and packed at once in a small box, wra])ped tightly round 

 with ])aper. The parcels should l)e marked " Sheep Blow-fly 

 Specimens," and may be sent O.H.M.S. addressed to the Border 

 Entomologist, P.O. Box IG, East liondon. 



Information on the following points is wanted from farmers, 

 especially when sending specimens: — 



From what part of the sheep were the maggots taken? 



Was the animal recently infested or had it been suffering for 



some time? 

 To what extent were the sheep infested? Were only a few odd 

 sheep affected, or was the infestation general throughout the 

 flock? 

 Was the present season normal as regards rainfall, or had there 



been a drought or more rain than usual? 

 Had rain fallen shortly before the maggots were found on the 



sheep ? 

 Do the sheep suffer to any extent from intestinal worms, and how 



much diarrhoea or purging is there? 

 Are the sheep infested more at one time of the year than another, 

 and, if so, when? Are maggots noticed in the wool during 

 the winter months at all? 



In conclusion the writer would like to express his thanks to 

 Mr. G. W. Turpin, of Woodridge, Dohne, for his kindness in afford- 

 ing him opportunities of studying the subject, both at Woodridge 

 and on his farm Silverdale, in the East London District. 



Outbreaks of Animal Diseases: September, 1922. 



