(w* ) 
I. Additional ObferDations upon the 
Production of Mites , Sec. In a Let- 
ter from Mr. Anthony van Leeu- 
wenhoek, F. 2^S. 
Velft , September 22. 1711. 
Honourable Gentlemen , 
I Did at firft intend to have Cent you an Extraft only 
of the following Obfervations $ but I have fince 
changed my Mind, and thought fit to Communicate 
them to you, as I made them from time to time. 
I have formerly acquainted you how thofe little Ani- 
malcula , which we call Mites, couple and lay their Eggs, 
and how young Mites are again produced out of thofe 
Eggs, as alfo that I obferved the Hair upon their Bo- 
dies. And tho’ I then imagin’d, that I had obferved 
every thing about the Mite that was to be feen, yet I 
have thought fit to view one of thefe Animalcula again 
with a Microfcope 5 and the rather, becaufe that I 
found in obferving thofe fmall Anitnalcnla that feed 
upon the Nutmeg, that thofe Particles upon their Bo- 
dies, which one would take to be Hairs, are really not 
fo 5 for I cannot allow thofe Particles to be Hair, or 
Wool, unlefs they are fmooth and even, fetting afide 
the Bark, or Skin of the Hair, which may be the caufe 
of its being’ a little rough and uneven. 
H 
Thofe 
