Microscopical Essays, 



127 



refearches : and his mind being ftrengthened by the, victory it has 

 gained, will be more keen in perceiving, and more patient in the 

 inveltigation of truth. 



It has long been a complaint,* that many of thofe who pur- 

 chafe microfcopes are fo little acquainted with their general and 

 extenfive ufefulnefs, and fo much at a lofs for objects to examine 

 by them, that after diverting their friends fome few times with 

 what they find in the Aiders, which generally accompany the in- 

 itrument, or perhaps two or three common objecls, the micro- 

 fcope is laid afide as of little further value : whereas no inflrument 

 has yet appeared in the world capable of affording fo conftant, 

 various, and fatisf.aory an entertainment to the mind. This 

 complaint will, 1 hope, be obviated by thefe efl'ays, in which I have 

 endeavoured to make the ufe of the microfcope eafy, point out 

 an immenfe variety of objeas, and direa the obferver how to 

 prepare them for examination. 



The fubjea treated of in this chapter naturally divides itfelf 

 into three heads : 1. concerning the neceffary preparation and 

 adjuftment of the microfcope; the 2nd, treating, of the proper 

 quantity of the light, and belt method of adapting it to the ob~ 

 jeas under examination ; the 3d, (hewing how to prepare and 

 prefervc the various objeas, that their nature, organization, and; 

 texture, may be properly underftood. 



' < Or 



* Baker's Microfcope made Eafy, p. $i> 



