USE OF THE COMPOUND MICROSCOPE 35 



than a small one, but the difference is not very great 

 so far as actual results are concerned. The illumina- 

 tion given by this accessory is necessarily one-sided, 

 and gives rise to severe contrasts of light and shade. 

 If more even lighting is necessary, it can be secured 



Fig. 12. — Silver Side Reflector. 



by using a silver side reflector (Fig. 12). This is 

 supplied in a mount with a stem for fitting into 

 the stage or body of the microscope, and ball-joints 

 allowing the reflector to be adjusted, hollow surface 

 inwards, by the side of the object. The lamp is 

 placed on one side, on a level with and opposite to 



