times bigger than themfelves ^ they were fo far advanced 
in growth, that without ufing any more Food, they 
were ready to be changed inco Flying Creatures ^ I put 
them alfo into the glafs Tube. 
I imagined that rhefe To^^ekcffs were of the fame 
make or contexture with thofe of-, our. ordinary Flies ^ 
that is, when'any of thofe. WQrms^are near the'ir change, 
their Skins are ccntrafted or turn'd into other Skins that 
are (horter, and ftick clofer to their bodies, wh'ch we call 
a Tonnch}!^ wirhout making any Web, as happens to 
fome forrs of Flying Creatures. 
, . Thefe Tom^ckeris were of a darkiOi red colour, when 
I open'd ong of them, I found the Worm lying entire as 
it was, tho it had been fhut up in its fhell above 14 
days ^ and when I had placed fome part of the Tonne- 
ken betore my Microfcppe, 1 found that I was deceived 
in my meaning, and that it did not confifi: either of the 
Web or Skin of the faid Worm, and was inclined to be- 
lieve that it was rather a part of the Leaf it felf : For 
my Glafs reprefented the Parts thereof like Branches, 
from whence proceeded fmaller Sprigs 5 and further, tho 
I open d feveral of thofe Knobs before-mentioned, I did 
not find one Tonneken therein, except in thofe which I 
piU into my glafs Tube, riotwithftanding I have defcri- 
bed by Fig. A a Tonneken lying in fuch a knob- 
After fome weeks, I perceived certain black Flies pro- 
ceeding from thofe Tonnekens^ the hinder parts of their 
Body being of an oblong fliape, and fafliion*d like a 
Hook ^ others could not arrive to their maturity, but 
having made a fmall opening in their Shell, juft put 
their Heads through and fo died. From thefe fame 
Tonnektns proceeded a fecond fort of Fly, that were lef- 
fer than the former, and not fo picked at the end. I 
faw two of thofe fmall Worms ( which, as I faid before, 
ufed to devour the great onesj endeavouring to (hut 
themfelves up into a Web, but by reafon of the large 
