THE HIGHEST MAGNIFICATION 33 



High Possibilities with the Microscope. 



What is the highest magnification obtained 

 with the modern microscope ? 



This is a question the microscopist is fre- 

 quently asked. 



Two answers can be given to that question. 



Those unacquainted with the use of the 

 microscope will bear in mind that students of 

 that instrument never speak of the superficial 

 area of any microscopic amplification ; it being 

 understood by them that dimensions are 

 always to be expressed in diameters only. 



Those who, at the Eoyal Society's recent 

 Conversazione, were privileged to see the "High 

 Power Microscopy," by Mr. J. W. Gordon, must 

 have realised that microscopy had made a 

 decided step forward by that gentleman's in- 

 vention. 



The answer, or one of the answers to the 

 above question, will be apparent from a brief 

 consideration of Mr. Gordon's ingenious 

 methods. 



He had two microscopes. In the field of 



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