SIMPLE MICROSCOPES. 



Simple microscopes are usually termed magni- 

 fiers and whether consisting- of one or several 

 lenses in close contact, always remain simple. 

 They are made to be held in the hand or at'e fixed 



Fig. 12. Fig. 13. 



on a stand or mounting, with provisions for adjust- 

 ing for focus, thus to give steadiness and leave the 

 hands free for dissecting or moving the object 



