THE MICROSCOPE IN MODERN PHARMACY 



been forced to admit this fact, and, as a result, they have in many 

 instances ceased their nefarious business, and in other instances they 

 have met the trained scientist with almost equal shrewdness. The 

 customary procedure of the former unscrupulous collectors, dealers, 

 etc., was to adulterate crude drugs and powdered drugs with substances 

 which were common, easily obtained, and which did not materially 



1 - 



SHORT SLIDE ---- . ---- , 



STASE ------- 



ADJUSTABLE 



SPRING FINGER. 



CONDENSED MOUNTING OK 



DROP Swmc 



LOWER IRIS DIAPHRASM- 



FOR 



STACE CENTERING SCREWS 

 MIRROR. 



MHHMM 



MIRROR BAR 



HORSESHOE 

 BASE 



FIG. 6. A modern compound microscope. 



modify the gross characters of the drug. These substances were often 

 added in large quantities and yet may have borne no histological 

 resemblance to the drug itself. All kinds of vegetable tissues, starch 

 and flour in particular, were used, also sand and clay, often colored 

 artifically so as not to modify the normal color of the drug. History 

 records the preparation of wooden nutmegs, clay coffee beans, cloves 

 of pressed starch, etc. The wise modern sophisticator discards such 



