OBJECTS FOR THE MICROSCOPE. 



INTRODUCTION. 



" The microscope is an optical instrument by means of which we are 

 enabled to see objects or parts of objects too minute to be seen with 

 the naked eye ; the name being taken from two Greek words, 

 (mikron), a little thing, and GKotrkit) (skopeo), I look at" Lardner. 



ON THE USE OF THE MICROSCOPE. 



ALTHOUGH a minute description of the construction of the 

 microscope would be out of place in this small work, and 

 involve more of the science of optics than could be 

 understood without diagrams and much knowledge of the 

 laws of light, yet it will be useful to give a few hints on 

 the practical management of a newly -purchased instru- 

 ment. 



Assuming the student to be desirous of obtaining an effi- 

 cient instrument at a moderate cost, he cannot do better 

 than procure what is ordinarily termed a student's micro- 

 scope, which may be obtained from 3 3s. to 5 5s. 



The following makers supply well-finished microscopes at 

 low prices: Amadio, 7, Throgmorton Street; Baker, 243, 

 High Holborn; Highley, 70, Dean Street; Home and 

 Thornthwaite, 121, Newgate Street; Ladd, 11, Beak 

 Street, Eegent Street ; Newton, 3, Fleet Street; Pellischer, 

 88, New Bond Street ; Smith, Beck, and Beck, 6, Coleman 

 Street ; Wood, 74, Cheapside. 



It is a difficult and delicate matter to treat this recom- 

 mending of a microscope the makers are every year improv- 



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