Reports to the Board of Agriculture. 133 
out that these processes are called into play, and it is largely by 
their means that the maggots move. 
“ Maggots are nearly always found in the various sinus or spaces 
of the head, and from personal experience I should say that it is 
in such places that they cause the greatest harm to the host. The 
larvte live in the head for at least nine months. The larvae do not 
all pupate ‘ an inch or two under the ground, 5 as sometimes stated. 
The most favourite place seems to be just under a tuft of grass, or, 
where obtainable, a stone. 
“ With regard to prevention, two very important things are : (a) 
removal of sheep from infected meadows when the flies are hatching 
out — the adults will not fly any distance (they appear in June and 
July); (b) placing salt about in small boxes smeared all over with 
tar, or (c) salt in closed boxes (Walker’s method) with round holes 
above, also smeared with tar. The sheep thus get the tar on their 
noses, and this wards off the fly. It would be quite impossible to 
dress large flocks every two or three days over a period of three 
months — at least, no large flockmaster would be likely to employ 
such a tedious process ; (d) all diseased sheep should be penned. 
Preventive against Liver Fluke ( Distomum hepaticum ) 
in Sheep. 
In connection with the Board Leaflet (No. 89), on Liver Fluke, 
the following information was sent : — 
Sulphate of iron is one of the two substances said to be best 
suited to the treatment of sheep with rot and to act as a preventative, 
especially when mixed with food-stuffs. 
Professor Simonds’ receipt is one most usually recorded, viz. : — 
Linseed oil cake, 1 bushel ; pea meal, 1 bushel ; salt, 4 lbs. ; sulphate 
of iron, 1 lb. Well ground together, i to 1 pint to each sheep per 
diem. 
Another receipt is : — 1 drachm sulphate of iron ; £ oz. salt. 
Mixed with bran, crushed oats or cake for each sheep per diem. 
I certainly do not think any great benefit (as a preventative of 
Fluke) will be found in salt applied to the land. 
