( 44 ^ ) 
VI. So??je Account of Mr. Leeuwenhoek’^ 
Microfcopes, lately prefented to the Royal So- 
ciety. Bj Martin Folkes, Vtce-f^refident 
of the Royal Society. 
I T is now* above $o Years, fince the late Mr, Leeuwen- 
hoek hrfl began his Carrefpondence with the Royal 
Society^ when he was recommended by Dr. Regnerus 
de Graaf, as a Perfon already Gohhderable by his Mi- 
crofcopical Difcoveries, made with GlalTes contrived by 
himfelf, and excelling even thofe of the famous Eujla- 
chio Divini^ fo much talk’d of in the learned World: 
And as he has ever fince that Time apply’d himfelf, 
with the greateft Diligence and Succefs, to the fame 
Sort of Obfervatioris, no Doubt can be made of the 
Excellency of thofe Inftruments he fo long us’d, fo 
much improv’d, and .upon the fullelt Experience fo 
often commended in his Letters ^ great Part of which, 
at his Deceafe, he thought fit to bequeath to this Socie- 
ty, for whom he ever exprels’d the greateft Efteem and 
Refpeft. 
He had, indeed, intimated this Defign in feyeral of 
his Letters, and in his laft Will and Teftament gave 
Orders, that the Glalfes ftiould be delivered as'foon as 
conveniently might be after his Deceafe which was 
accordingly done, by the Direftions of his furviving 
Daughter, Mrs. Maria Van Leeuwenhoek^ to whofe 
great Care we are oblig’d, for the fafe and fpeedy De- 
livery of this very curious and valuable Prefent. 
- ' . The 
