(740 
very extraordinary in a Creature of that Strength and 
Vivacity in its Flight. 
During thefe unfavourable Seafohs of Weather, the 
Swine and Poultry of the Country at length grew fo 
cunning, as to watch under the Trees for their tailing ; 
and when they came to the Ground eat them up in abun- 
dance, being much pleafed with the Food, and thriving 
well upon the Diet: Nay, I have been aflured, that the 
poorer fort of the Native Irijh (the Country then Ji- 
bouring under a Scarcity of Provifion) had a way of 
drefling them, and lived upon them as Food ; nor is it 
ftrange that what fattened our domeftick Poultry and 
Hogs, ftiould afford agreeable and fufficient Nourifti- 
ment for the Relief of Man. 
In a little time it was found, that Smoak was another 
thing that was very offenfive to thefe Flies, and by burn- 
ing Heathy Fern, and fuch like Weeds, in this or that 
Corner of their Gardens or Orchards, which lay moft 
convenient for the Wind to difperfe it among the Trees, 
they would fecure their Gardens and prevent their In- * 
curfions, or if they had already made any Incroach- 
ment upon them, by this means they effeftually drove 
them out again. 
But towards the latter end of the Summer, the ex- 
aft time I have not learnt, they conftantly eafed the 
Country, and retired of themfelves and fo wholly diP 
appeared, that in a few Days you Ihould not fee one left 
in all thofe parts that were fo lately pefter'd with 
ihera. 
Where they go is made a Queftion,fome thinking they 
take their Flight like Swaffcivsj and other Birds of Vaf- 
fage^ as they are call'd, to a more diftant Country and 
warmer Climate. But I believe there is no other Ground 
for this Fancy, than 'tisobferved of this Infeft, that fome- 
times it Migratory f and removes its Quartern from one 
