x1] Flies 157 
The wool soon becomes discoloured and matted 
together, in bad cases it falls out and large sores are 
produced. The affected sheep lose condition very 
rapidly. The flies lay their eggs from May until 
October on the positions mentioned, and especially 
where dirt has collected. Each fly is capable of laying 
several hundred eggs. 
The small legless maggots which hatch out feed 
first on the surface and then in the sores formed. In 
about a fortnight they fall to the ground and change 
into puparia. In another fortnight or more the flies 
hatch out. In this way several broods are produced 
throughout the year. 
Remedial Measures. 
It is the shepherd’s business to watch the sheep 
carefully so that those affected may be treated early. 
The hindquarters should be kept as clean as possible 
by docking and clipping the wool of the tail and the 
regions around. The fly prefers putrid matter in which 
to lay its eggs so that clean sheep may suffer less. 
Clean sheep however are often: attacked. 
Dipping sheep in some poisonous substance is 
compulsory in this country between certain dates. 
This order was brought in to reduce scab (caused by 
a mite). It also kills maggots, keds, lice and ticks. 
Sheep which have been dipped in this way may become 
struck by maggot about a fortnight later. In bad cases 
it may be necessary to dip for maggot once or twice. 
A dip composed of sulphur, arsenic, soda, and soft 
soap is useful for keeping off flies. Dressing the 
affected parts with a mixture of equal parts of turpentine 
and rape oil, or by means of paraffin mixed with water, 
