48 



HISTOLOGY OF MEDICINAL PLANTS 



number, and the box, the tray or cabinet number. For 

 example: 



Powdered Arnica Flowers 

 No. 80 Box A 600. 



PRESERVATION OF MOUNTED SPECIMENS 



Accurately mounted, labeled, and ringed slides should be 

 filed away for future study and reference. Such filing may 



FIG. 52. Slide Box 



FIG. 53. Slide Tray 



be done in slide boxes, in slide trays, or in cabinets. Slide 

 boxes are to be had of a holding capacity varying from one to 



