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Kingdom to another ; but this I conceive is but acciden- 
tal ; and that it commonly quits its former Seat, only 
for want of Provifion, or as we fee Bees do, when they 
find their Hive, or whatever place they fix upon for their 
Habitation, becomes over ftockt and too narrow a Com- 
pafs for their Reception : as for their removing to fo 
great a Diftance, as to Change one Country for another, 
it happens only I fuppofe, when feme high Wind fud- 
denly rifes at the time of their Swarming, and drives 
them even croft the Seas to feek for a new Dwelling in 
feme other Land. 
The true Reafqn then of their difappearing I take to 
be, that after their Coition is over, for 'tis about 
this time they are feen to Couple by fattening to one 
another by their Tails, they retire under Ground in or- 
der lo lay their Spawn there, for a fucceeding Generati- 
on; and likewife to compofeand fettle themfelves to 
fleep for the reft of the enfuing Year, as feveral other A- 
nimalsare known to do : for Inftance, Smils zmongln* 
fe£ts, the Hedge-hog among the Beafts, and as I have 
good reafon to think, the Ortygometraox Rail among the 
Birds a fort of Fowl, that's icarce, if at all met with in 
fbme parts of England, yet very numerous in all parts of 
this Country in its Seafon, but that's but fliort, and lafts 
not above Three or Four Months in the Summer^ during 
all the remaining parts of the Year, it lies buried and 
afleep under Ground like thefe Flies. 
What further confirms me in this Opinion concerning 
thefe Infefts, is, that I am certainly informed by feve- 
ral good Hands, that in the Spring time, by accidental 
digging or plowing up the Ground, great Hollows or 
Nefts of them are frequently difcovered and broken up, 
where they find whole bufliels together in one Heap, but 
in fuch a quiet Condition they feem to have but little 
Life and Motion, for they do not ftir unleG you touch 
or 
