INTRODUCTION. 



To thefe Obfervations I have added 

 fome other microfcopical Difcove- 

 ries, I had formerly made, which 

 I believe are entirely New, and may, 

 I hope, upon that Account prove 

 agreeable to the Publick. Their No- 

 velty and Singularity will perhaps 

 make fome amends for my inaccu- 

 rate and unexpreffive Style, which 

 I am fo fenfible of, that I dare make 

 no other Apology for my Appear- 

 ance in Print, than that this being the 

 firft EfTay of a young Author, he 

 hopes in Confideration of that to 

 meet with fome Allowances from 

 his learned Readers, in the Perufal 

 of this Performance. 



A N 



