B 



Parts of a Microscope : B Base or foot ; D Draw-tube ; E Ocular or eye-piece ; HA Handle; 

 I Joint for inclination ; M Mirror; MH Head of the micrometer screw for fine adjustment ; 

 O Objective ; P Pillar ; PH Head of the Pinion for the coarse adjustment ; R Rack of coarse 

 adjustment ; RN Revolving- nose-piece ; S Stage of the microscope ; SS Substage containing 

 the Abbe condenser ; T Body Tube. (Cuts loaned by the Bausch & I,om1> Opt. Co.) 



