Mounting 61 



left to right and top to bottom (like a printed page). When the sectioning 

 is finished, the sections are removed to slides in the above order. Serially 

 number each slide with a glass marking pencil (do not use a grease pen- 

 cil and have it wash off in staining solutions). This system affords simple 

 sorting of slides \vhen all processing is complete. 



