( ) 
V. Part of tm Letters from Mr Anthony Van 
Leewenhoek, F. R concerning Worms pre- 
tended to be tak^n from the Teeth. 
SIR, 
YOar moft acceptable Letter, dated Julj^.oUMc, 
came to hand on the 19th of the fame month, 
new ftile : upon the receipt v/hereof, I immediately 
opencl the piece of black Silk contained within it, 
where I found two little Worms dead, and one alive^ 
which were feot you to be convey 'd to me^ as being 
taken out of a corrupt Tooth by fmoaking. 
Immediately I made it my bufinefs to find out what 
fort of Woi^ms they were, and how they were gene- 
rated. 
I had not fpent much time upon the living Worm, 
which wanted above one half of its full growth, when 
I concluded that it fprung from the Egg of a fmall 
Fly, of that fort of Flies that frequent Cheefemoogers 
Shops for the moft part, and have a peculiar humour 
ot laying their Eggs upon Cheefe : now the Worms 
taking their »(e from thofe Eggs,, bore through the 
Cheefe, and take their nouri(hment and growrii from 
it 5 and afterwards become little Flies again. When 
thefe little Worms arrive at fuch a buHc as is difcerni- 
ble by the naked eye, we call em Worms. 
I took a Glafs Tube, one end whereof was blown 
together, it being fomevvhat more than a finger long. 
