LABORATORY SUPPLIES AND CHEMICALS 



351 



6204 



6208 6212 



Spencer Achromatic Objectives 



6216 



6222 



6222 DARK FIELD ILLUMINATOR. The constuction of this illumintor is such 

 that it can be used on any microscope. The condenser is mounted in a 

 solid piece of brass with slots at the end for the stage clips of the 

 microscope. The illuminator being held in this way permits the use of 

 ordinary slides on the top surface. In case $10.00 



