( V ) 



'' The preceding 27 Letters, written by the Author, 

 *' he cannot yet determine to make public in print ; 

 '* therefore the 28th Letter is the firft that is here pub- 

 '^ lifhed." 



If I may be allowed to form a conje6lure on this occa- 

 fion, it is, that Mr. Leeuwenhoek had not, by fubfe- 

 quent obfervation, convinced himfelf of the accuracy of 

 his firft difcoveries, and, on perufing fome of his firft 

 Letters to the Royal Society. I faw reafon to be con- 

 firmed in that idea. 



I will conclude with the following teftimony in favour of 

 our Author, by Sir Martin Folkes, formerly Prefident of 

 the Royal Society. 



'' We have feen fo many, and thofe of his moft fur- 

 ^' prifing difcoveries, fo perfe6lly confirmed by great num- 

 '^ bers of the moft curious and judicious Obfervers, that 

 *' there can furely be no reafon to diftruft his accuracy in 

 *' thofe others which have not yet been fo frequently or 

 '' carefully examined." 



Philofophical TrarifaBions , No. 380, SeB. vi. 





